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A262015
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a(n) = [x^n] (1-x)^(4*n+1) * Sum_{k>=0} binomial(n+k-1,k)^4 * x^k.
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1
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1, 11, 603, 49682, 4961755, 554083761, 66555527346, 8415759917268, 1105492743188955, 149552158117961225, 20710288432292240353, 2923132560874617706758, 419153950726771517250994, 60909593781491823719018822, 8952489587089165075007703060, 1328855554150146863702291235432, 198950469430034588049648664728027, 30012345078088728771497844274527081
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listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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LINKS
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PROG
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(PARI) {A262014(n, k)=polcoeff(sum(j=0, n+k, binomial(n+j, j)^4*x^j)*(1-x)^(4*n+1), k)}
for(n=0, 20, print1(A262014(n, n), ", "))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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