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Search: id:A093542
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| A093542 |
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Antidiagonal sums of square array A093541, in which column (k+1) equals the self-convolution of row k. |
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3
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| 1, 2, 4, 9, 24, 76, 284, 1244, 6342, 37527, 257802, 2058644, 19145230, 207751462, 2634249124, 39067322628, 677908600818, 13763069607754, 326806505773540, 9071727194243794
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OFFSET
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0,2
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PROGRAM
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(PARI) T(n, k)=if(n<0|k<0, 0, if(n==0|k==0, 1, sum(i=0, n, T(k-1, i)*T(k-1, n-i)))); a(n)=sum(k=0, n, T(n-k, k))
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CROSSREFS
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Cf. A093541, A093543.
Sequence in context: A141824 A005001 A091151 this_sequence A000667 A131351 A091352
Adjacent sequences: A093539 A093540 A093541 this_sequence A093543 A093544 A093545
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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), Mar 30 2004
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