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Search: id:A136632
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A136632 a(n) = Sum_{k=0..n} A136630(n,k) * 2^(nk). +0
7
1, 2, 16, 520, 66560, 33882144, 69055086592, 564152735105152, 18462508115518554112, 2418626436468567646929408, 1267795674038260517176495570944, 2658560573512321601282555747644737536 (list; graph; listen)
OFFSET

0,2

PROGRAM

(PARI) {a(n)=sum(k=0, n, 2^(n*k)*polcoeff(x^k/prod(j=0, k\2, 1-(2*j+k-2*(k\2))^2*x^2 +x*O(x^n)), n))}

CROSSREFS

Cf. A136630, A003724 (row sums of A136630).

Sequence in context: A063391 A002416 A013028 this_sequence A012919 A012914 A013087

Adjacent sequences: A136629 A136630 A136631 this_sequence A136633 A136634 A136635

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Jan 14 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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