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Search: id:A135951
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| 1, -3, 70, -11160, 12850368, -111842970624, 7558738517524480, -4024873276683363287040, 17013427111087951089139449856, -573105858480900876266937950612226048, 154142404695090288939416498797330749299097600
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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A022166 is the triangle of Gaussian binomial coefficients [n,k] for q = 2.
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PROGRAM
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(PARI) {a(n)=local(q=2, A=matrix(2*n+1, 2*n+1, n, k, if(n>=k, if(n==1|k==1, 1, prod(j=n-k+1, n-1, 1-q^j)/prod(j=1, k-1, 1-q^j))))^-1); A[2*n+1, n+1]}
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CROSSREFS
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Cf. A135950; A022166.
Sequence in context: A082942 A000282 A140048 this_sequence A093245 A108231 A130894
Adjacent sequences: A135948 A135949 A135950 this_sequence A135952 A135953 A135954
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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), Dec 08 2007
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