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Search: id:A101484
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| A101484 |
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Row sums of triangular matrix A101479, in which row n equals row (n-1) of A101479^(n-1) followed by '1'. |
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+0
2
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| 1, 2, 3, 7, 33, 285, 3648, 61306, 1270440, 31244205, 888288960, 28640745684, 1032065614715, 41087944243649, 1790413981105727, 84737880414848784, 4327877295100145382, 237218770042549151701, 13887772416031152573506
(list; graph; listen)
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OFFSET
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0,2
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PROGRAM
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(PARI) {a(n)=local(A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(i-2))[i-1, j]); )); A=B); return(sum(k=1, n+1, A[n+1, k]))}
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CROSSREFS
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Sequence in context: A066279 A057677 A032148 this_sequence A004026 A135907 A034900
Adjacent sequences: A101481 A101482 A101483 this_sequence A101485 A101486 A101487
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Jan 21 2005
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