cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A262015 a(n) = [x^n] (1-x)^(4*n+1) * Sum_{k>=0} binomial(n+k-1,k)^4 * x^k.

Original entry on oeis.org

1, 11, 603, 49682, 4961755, 554083761, 66555527346, 8415759917268, 1105492743188955, 149552158117961225, 20710288432292240353, 2923132560874617706758, 419153950726771517250994, 60909593781491823719018822, 8952489587089165075007703060, 1328855554150146863702291235432, 198950469430034588049648664728027, 30012345078088728771497844274527081
Offset: 0

Views

Author

Paul D. Hanna, Sep 10 2015

Keywords

Crossrefs

Main diagonal of triangle A262014.

Programs

  • 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), ", "))
Showing 1-1 of 1 results.