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Search: id:A136471
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| 1, 4, 32, 756, 57008, 14053392, 11549010240, 32284463059856, 312975732247964288, 10703164992206736756608, 1309922159165846642159232512, 580548577042594102886390324391168
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OFFSET
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0,2
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COMMENT
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Triangle T = A136470 is defined by: column 0 of T^m = {C(m*2^n, n), n>=0}.
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PROGRAM
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(PARI) {a(n)=local(M=matrix(n+2, n+2, r, c, binomial(r*2^(c-1), c-1)), P); P=matrix(n+2, n+2, r, c, binomial((r+1)*2^(c-1), c-1)); (P~*M~^-1)[n+2, 2]/2^n}
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CROSSREFS
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Cf. A136470; A136472.
Adjacent sequences: A136468 A136469 A136470 this_sequence A136472 A136473 A136474
Sequence in context: A118995 A134087 A132854 this_sequence A028369 A081790 A053005
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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 01 2008
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