HP 25 Fibonacci sequence in one program step

[Didier Lachieze]

(10-13-2021 08:34 PM)rprosperi Wrote:  only the 42S includes recall arithmetic AND stack register access.

This works also on the WP-34S.

For RPL, with two keys:
0 ENTER
1 ENTER
Then repeat DUP2 +

And for the HP Prime (non-RPN entry mode), with one key:
0 ENTER
1 ENTER
Ans+Ans(2)
Then repeat ENTER