cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A157629 A general recursion triangle with third part a power triangle:m=2; Power triangle: f(n,k,m)=If[n*k*(n - k) == 0, 1, n^m - (k^m + (n - k)^m)]; Recursion: A(n,k,m)=(m*(n - k) + 1)*A(n - 1, k - 1, m) + (m*k + 1)*A(n - 1, k, m) + m*f(n, k, m)*A(n - 2, k - 1, m).

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%I A157629 #2 Mar 30 2012 17:34:34
%S A157629 1,1,1,1,10,1,1,43,43,1,1,148,590,148,1,1,469,5018,5018,469,1,1,1438,
%T A157629 34047,91492,34047,1438,1,1,4351,204813,1187731,1187731,204813,4351,1,
%U A157629 1,13096,1149652,12609880,27234646,12609880,1149652,13096,1,1,39337
%N A157629 A general recursion triangle with third part a power triangle:m=2; Power triangle: f(n,k,m)=If[n*k*(n - k) == 0, 1, n^m - (k^m + (n - k)^m)]; Recursion: A(n,k,m)=(m*(n - k) + 1)*A(n - 1, k - 1, m) + (m*k + 1)*A(n - 1, k, m) + m*f(n, k, m)*A(n - 2, k - 1, m).
%C A157629 Row sums are:
%C A157629 {1, 2, 12, 88, 888, 10976, 162464, 2793792, 54779904, 1206055680, 29460493056,...}.
%F A157629 m=0:Pascal:m=1Eulerian numbers;
%F A157629 m=2;
%F A157629 Power triangle:
%F A157629 f(n,k,m)=If[n*k*(n - k) == 0, 1, n^m - (k^m + (n - k)^m)];
%F A157629 Recursion:
%F A157629 A(n,k,m)=(m*(n - k) + 1)*A(n - 1, k - 1, m) +
%F A157629 (m*k + 1)*A(n - 1, k, m) +
%F A157629 m*f(n, k, m)*A(n - 2, k - 1, m).
%e A157629 {1},
%e A157629 {1, 1},
%e A157629 {1, 10, 1},
%e A157629 {1, 43, 43, 1},
%e A157629 {1, 148, 590, 148, 1},
%e A157629 {1, 469, 5018, 5018, 469, 1},
%e A157629 {1, 1438, 34047, 91492, 34047, 1438, 1},
%e A157629 {1, 4351, 204813, 1187731, 1187731, 204813, 4351, 1},
%e A157629 {1, 13096, 1149652, 12609880, 27234646, 12609880, 1149652, 13096, 1},
%e A157629 {1, 39337, 6188356, 117961172, 478838974, 478838974, 117961172, 6188356, 39337, 1},
%e A157629 {1, 118066, 32448653, 1015124312, 7053594482, 13257922028, 7053594482, 1015124312, 32448653, 118066, 1}
%t A157629 A[n_, 0, m_] := 1; A[n_, n_, m_] := 1;
%t A157629 A[n_, k_, m_] := (m*(n - k) + 1)*A[n - 1, k - 1, m] + (m*k + 1)*A[n - 1, k, m] + m*f[n, k, m]*A[n - 2, k - 1, m];
%t A157629 Table[A[n, k, m], {m, 0, 10}, {n, 0, 10}, {k, 0, n}];
%t A157629 Table[Flatten[Table[Table[A[n, k, m], {k, 0, n}], {n, 0, 10}]], {m, 0, 10}]
%t A157629 Table[Table[Sum[A[n, k, m], {k, 0, n}], {n, 0, 10}], {m, 0, 10}];
%Y A157629 A142459, A154336, A157277
%K A157629 nonn,tabl,uned
%O A157629 0,5
%A A157629 _Roger L. Bagula_, Mar 03 2009