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A117255
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Column 0 of triangle A117254.
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1
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1, 1, -6, 224, -39424, 30277632, -98180268032, 1321338098679808, -73064711504598663168, 16493270769791857518968832, -15132641904367108441083979235328, 56258298143912014448000446346897129472, -845539117695226477286180063077230730209656832
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) = [prod_{j=0..n-1} (1-4*j)]/n! * 4^(n*(n-1)/2).
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PROG
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(PARI) {a(n)=local(m=1, p=4, q=4, r=1); prod(j=0, n-1, m*r-p*j)/n!*q^(n*(n-1)/2)}
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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