Non Recursions


These are the sequences that pass recursion tests, but from their definitions it is not clear if they are recursions. I added comments for the sequences that I know not to be recursions. See the main page Recursive Sequences.

This page is synchronized with OEIS in January 2007. Sequences in OEIS might start with a different index.


Interesting Sequences.

Sequences:


a(n) = d * a(n-1) - a(n-2).

Sequences:


a(n) = d * a(n-1) + d * a(n-2).

Sequences:


a(n) = a(n-1) + a(n-2).

Sequences:


a(n) = d * a(n-1) + a(n-2).

Sequences:


a(n) = d * a(n-1). Geometric progressions.

Sequences:


a(n) = a(n-1) + d. Arithmetic progressions.

Sequences:


a(n) = a(n-1). Constants.

Sequences:


Comments.


Last revised March 2007