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Search: id:A111557
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| 1, 5, 34, 282, 2696, 28792, 337072, 4273632, 58195072, 846038912, 13072140032, 213897731712, 3695682017792, 67254929193472, 1286282280266752, 25802708552696832, 541894309127053312, 11894387852938452992
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OFFSET
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0,2
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FORMULA
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a(n) = A111553(n+4, 4) = A111560(n+1, 0).
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PROGRAM
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(PARI) {a(n)=if(n<0, 0, (matrix(n+5, n+5, m, j, if(m==j, 1, if(m==j+1, -m+1, -(m-j-1)*polcoeff(log(sum(i=0, m, (i+3)!/3!*x^i)), m-j-1))))^-1)[n+5, 5])}
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CROSSREFS
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Cf. A111553, A111560.
Adjacent sequences: A111554 A111555 A111556 this_sequence A111558 A111559 A111560
Sequence in context: A058248 A116435 A090367 this_sequence A121323 A068475 A097817
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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), Aug 07 2005
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