login
a(n) is the number of n X n nonsingular matrices using all the integers from 1 to n^2.
2

%I #16 Jul 24 2023 15:09:34

%S 1,24,360144,20914499571840

%N a(n) is the number of n X n nonsingular matrices using all the integers from 1 to n^2.

%F a(n) = (n^2)! - A221976(n). - _Vaclav Kotesovec_, Jul 16 2023

%Y Right diagonal of A364203.

%Y Cf. A085000 (maximal determinant), A350565 (minimal permanent), A350566 (maximal permanent).

%Y Cf. A364227 (with prime numbers).

%Y Cf. A088020, A136609, A221976.

%K nonn,hard,more

%O 1,2

%A _Stefano Spezia_, Jul 13 2023

%E a(4) from _Vaclav Kotesovec_, Jul 16 2023 (using A221976)