Find number property and write RPL program (HP-49G,G+, HP 50g)

[Gerson W. Barbosa]

This morning I opened my wallet and found only six bills therein (*). Oddly enough all their serial numbers are odd numbers.

1. Besides being odd numbers, what other property do they share?
2. Write a short RPL program to return a list containing the first n numbers which share that property (the shortest the better). Notice the list shall not contain any number ending in 7 or 5 (except 5 itself).
   

As always, research is allowed and encouraged. Both tasks shouldn't be difficult to accomplish, though.

Have fun!


(*) This is not to be taken seriously, of course. Even if they had only the odd-number property, that would have been quite unlikely.