A265142 a(n) = smallest magic sum of any 3 X 3 semimagic square composed of n-gonal numbers.

711, 3249, 412249, 521298, 756786, 1076461

Offset: 3

Author

Arkadiusz Wesolowski, Dec 02 2015

Keywords

• nonn
• more

Links

• Index entries for sequences related to magic squares

Crossrefs

Cf. A269060, A269061, A265141.

Formula

a(n) = Sum_{k=1..3} A265141(n,k).

Extensions

a(6)-a(8) from Arkadiusz Wesolowski, Apr 03 2016