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A131681 Phi(binomial(2*n,n)*n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ). 0

%I #2 Oct 09 2013 02:24:34

%S 0,1,8,48,384,1440,8640,40320,184320,829440,5529600,18247680,87588864,

%T 474439680,1532805120,7664025600,32699842560,130288435200,

%U 517321728000,2184247296000,9196830720000,38626689024000,188841590784000

%N Phi(binomial(2*n,n)*n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ).

%p with(numtheory):with(combinat):a:=n->phi(binomial(2*n,n)*n^2): seq(a(n), n=0..25);

%Y Cf. A002736.

%K nonn

%O 0,3

%A _Zerinvary Lajos_, Oct 07 2007

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)