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+--- Thread: HP Prime: Connel Sequence (/thread-3332.html)
HP Prime: Connel Sequence - Gerald H - 03-10-2015 03:33 PM
Connel sequence or
http://oeis.org/A001614
Here the symbolics of a sequence app to show
Column 1: Connel sequence
Column 2: Partial sums of column 1
Column 3: Numbers missing from the Connel sequence
Column 4: Partial sums of column 3.
I don't know a better way of showing the symbolics than with screen shots.
[attachment=1769][attachment=1770][attachment=1771]
RE: HP Prime: Connel Sequence - Gerald H - 03-10-2015 03:59 PM
Now the complaint:
For N=32000 all columns are correct.
For N=40000 all columns show NaN.
The 38G gives correct values for 40000 (& in fact for 1000000).
RE: HP Prime: Connel Sequence - Didier Lachieze - 03-10-2015 04:40 PM
(03-10-2015 03:59 PM)Gerald H Wrote: Now the complaint:
For N=32000 all columns are correct.
For N=40000 all columns show NaN.
The 38G gives correct values for 40000 (& in fact for 1000000).
NaN start at N=32768 which is exactly 32K, so it may be linked to some internal variable/memory limitation.
[attachment=1772]
RE: HP Prime: Connel Sequence - Gerald H - 03-10-2015 04:59 PM
(03-10-2015 04:40 PM)Didier Lachieze Wrote:(03-10-2015 03:59 PM)Gerald H Wrote: Now the complaint:
For N=32000 all columns are correct.
For N=40000 all columns show NaN.
The 38G gives correct values for 40000 (& in fact for 1000000).
NaN start at N=32768 which is exactly 32K, so it may be linked to some internal variable/memory limitation.
Yes, & the values for 32767 are all correct.
RE: HP Prime: Connel Sequence - Thomas Ritschel - 03-11-2015 09:07 PM
(03-10-2015 04:59 PM)Gerald H Wrote:(03-10-2015 04:40 PM)Didier Lachieze Wrote: NaN start at N=32768 which is exactly 32K, so it may be linked to some internal variable/memory limitation.
Yes, & the values for 32767 are all correct.
Obviously the problem seems to exist for all sequences if the index N gets higher than 32767 (= 2^15-1). Also for simple sequences like U1(N)=N or even U1(N)=1. So, most likely a limitation issue for the index variable.
RE: HP Prime: Connel Sequence - Gerald H - 03-23-2015 07:42 AM
(03-11-2015 09:07 PM)Thomas Ritschel Wrote:(03-10-2015 04:59 PM)Gerald H Wrote: Yes, & the values for 32767 are all correct.
Obviously the problem seems to exist for all sequences if the index N gets higher than 32767 (= 2^15-1). Also for simple sequences like U1(N)=N or even U1(N)=1. So, most likely a limitation issue for the index variable.
An innovative limitation - the 39gii can go up to 65536.