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.

A181480 a(n) has generating function 1/((1-x)^k*(1-x^2)^(k*(k-1)/2)) for k=8.

Original entry on oeis.org

1, 8, 64, 344, 1744, 7400, 29632, 106808, 366088, 1168008, 3570240, 10347864, 28915056, 77493096, 201249216, 505130808, 1233655332, 2927916264, 6784208704, 15338678264, 33950726992, 73557910088, 156378379456, 326236930136, 669101503096, 1349416997864
Offset: 0

Views

Author

Wouter Meeussen, Oct 24 2010

Keywords

Comments

a(n-1,k) is conjectured to also be the count of monomials (or terms) in the Schur polynomials of k variables and degree n, summed over all partitions of n in at most k parts (zero-padded to length k).

Crossrefs

For k=2 (two variables): A002620, k=3: A038163, k=4: A054498, k=5: A181477, k=6: A181478, k=7: A181479.
Column k=8 of A210391. - Alois P. Heinz, Mar 22 2012

Programs

  • Mathematica
    CoefficientList[Series[1/(1-x)^8/(1-x^2)^28,{x,0,25}],x]