A380748 - OEIS

%I #4 Feb 03 2025 21:26:20

%S 1,0,2,5,15,50,180,695,2869,12616,58862,290305,1508483,8233942,

%T 47086560,281420499,1753994617,11377449948,76667702218,535802458029,

%U 3877528409495,29016786672794,224243915547756,1787491551588239,14680196745177309,124088256248966864,1078492866534953734

%N Antidiagonal sums of A380747.

%t A380747[0, 0]:=1; A380747[1, 0]:=-1; A380747[n_, k_]:=((k-1)*n+k)k^(n-1); a[n_]:=Sum[A[n-k,k],{k,0,n}]; Array[a,27,0]

%Y Cf. A380747.

%K nonn

%O 0,3

%A _Stefano Spezia_, Jan 31 2025