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Number of (non-null) regular subgraphs of a complete graph having n labeled vertices.
0

%I #27 Oct 02 2024 14:37:48

%S 1,4,11,32,99,452,2829,59728,1548859,168927280,12165067397,

%T 7074423251656,2294426405588381,4218009215702408336,

%U 3810376434461485027083,35102248193591661086986784,156873334244228518638713218203,4144940994226400702145709978496296

%N Number of (non-null) regular subgraphs of a complete graph having n labeled vertices.

%F a(n) = Sum_{k=1..n} binomial(n,k)*A295193(k). - _Andrew Howroyd_, Sep 08 2024

%Y Cf. A295193.

%K nonn

%O 1,2

%A _Maharshee K. Shah_, Sep 08 2024

%E a(9) onwards from _Andrew Howroyd_, Sep 08 2024