1,1
For n<=3 the terms are known to be optimal.
Table of n, a(n) for n=1..13.
Christian Boyer, Multimagic squares
Sequence in context: A032046 A247396 A180507 * A131213 A320260 A105371
Adjacent sequences: A218886 A218887 A218888 * A218890 A218891 A218892
nonn
Dmitri Kamenetsky, Nov 08 2012
approved