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Search: id:A136504
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| 1, 0, 1, -3, 19, -223, 5024, -221357, 19276981, -3337101203, 1151813749025, -793860037771900, 1093434531716214447, -3010922236710802264555, 16578683647583849207539977, -182552322688781602767983229935
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OFFSET
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0,4
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FORMULA
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G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n*(1+x)^(2^n).
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PROGRAM
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(PARI) {a(n)=local(M=matrix(n+1, n+1, r, c, binomial(2^(c-1), r-c))); sum(k=0, n, (M^-1)[n+1, k+1])}
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CROSSREFS
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Cf. A136502.
Sequence in context: A001833 A001035 A136652 this_sequence A003111 A126444 A001929
Adjacent sequences: A136501 A136502 A136503 this_sequence A136505 A136506 A136507
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KEYWORD
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sign
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Jan 01 2008
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