OEIS A167390: Cumbersome formula

[Allen]

Code:


a(14)=1+2+4+3...

Interesting problem, at first I though this wasn't a useful sequence, but after some more review, I believe
you've found a very dangerous generating sequence from the Book of Armaments!

If you are so inclined with difficult, but not useful problems (as many of us are!) rather than obtuse sequences from OEIS, may I suggest some of the problems from Project Euler?

Unlike the dusty corners of integer sequences, many Euler Problems are of practical use, and are FAR more pedagogically useful (even if some can't be done on the hand held), many can.