factorable trinomials

[Max Alekseyev]

On Sat, Apr 26, 2008 at 12:29 AM, Max Alekseyev <maxale at gmail.com> wrote:

>  I've been reading archives of Scripta Mathematica circa 1940 and found
>  some curious (and well forgotten) math reports that may result to new
>  sequences in OEIS.
>  A particular one that has drawn my attention is about "factorable trinomials":
>  http://img183.imageshack.us/img183/7731/trinomialsqn3.jpg
>  If anybody wants to elaborate on this topic and add new
>  references/sequences to OEIS - please do.

Another curious note is about "multigrade chains of order n":
http://img107.imageshack.us/img107/8403/chainsub9.jpg

Minimal such chains may represent certain interest.

Regards,
Max