OFFSET
3,1
COMMENTS
If a(n) exists, then n divides a(n). - Thomas Scheuerle, Apr 13 2022
LINKS
Eric Weisstein's World of Mathematics, Centered Polygonal Number
FORMULA
a(n) >= n*binomial(n + 2, 3) + n, if a(n) exists. - Thomas Scheuerle, Apr 13 2022
EXAMPLE
For n = 3: 96 = 1 + 10 + 85 = 1 + 31 + 64 = 19 + 31 + 46.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Apr 13 2022
EXTENSIONS
a(10)-a(16) from Thomas Scheuerle, Apr 13 2022
a(17)-a(40) from Michael S. Branicky, May 19 2022
STATUS
approved