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%I #10 Nov 07 2022 02:22:40
%S 1,8,720,691200,6739200000,668528640000000,663347543040000000000,
%T 6622861869711360000000000000,660754650163765248000000000000000000,
%U 660543208675712843120640000000000000000000000,6601093143555139842468151296000000000000000000000000000
%N a(n) = (1/2) * (number of n X n 0..9 matrices with MM' mod 10 = I).
%F a(n) = A003053(n) * A071304(n). - _Max Alekseyev_, Nov 06 2022
%Y Cf. A003053, A071302, A071303, A071304, A071305, A071306, A071307, A071309, A071310.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 11 2002
%E Terms a(6) onward from _Max Alekseyev_, Nov 06 2022
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