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A271699 Triangle read by rows, T(n,k) = Sum_{j=0..n} (-1)^(n-j)*C(-j,-n)*S1(k,j), S1 the Stirling cycle numbers A132393, for n>=0 and 0<=k<=n. 0

%I #7 Apr 18 2016 06:38:14

%S 1,0,1,0,1,2,0,1,3,9,0,1,4,14,58,0,1,5,20,90,475,0,1,6,27,131,729,

%T 4666,0,1,7,35,182,1064,7070,53116,0,1,8,44,244,1494,10284,79470,

%U 684762,0,1,9,54,318,2034,14478,114918,1012368,9833391

%N Triangle read by rows, T(n,k) = Sum_{j=0..n} (-1)^(n-j)*C(-j,-n)*S1(k,j), S1 the Stirling cycle numbers A132393, for n>=0 and 0<=k<=n.

%e Triangle starts:

%e 1,

%e 0, 1,

%e 0, 1, 2,

%e 0, 1, 3, 9,

%e 0, 1, 4, 14, 58,

%e 0, 1, 5, 20, 90, 475,

%e 0, 1, 6, 27, 131, 729, 4666,

%e 0, 1, 7, 35, 182, 1064, 7070, 53116

%p T := (n,k) -> add(abs(Stirling1(k,j))*binomial(-j,-n)*(-1)^(n-j), j=0..n):

%p seq(seq(T(n,k), k=0..n), n=0..9);

%t Flatten[Table[Sum[(-1)^(n-j)Binomial[-j,-n] Abs[StirlingS1[k,j]],{j,0,n}], {n,0,9},{k,0,n}]]

%Y A000027 (col. 2), A000096 (col. 3), A247329 (diag. n,n).

%K nonn,tabl

%O 0,6

%A _Peter Luschny_, Apr 14 2016

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Last modified September 10 12:51 EDT 2024. Contains 375790 sequences. (Running on oeis4.)