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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A275213 The largest coefficients of the extended q-Catalan polynomials which are defined in A274886.

Original entry on oeis.org

1, 1, 1, 1, 1, 2, 1, 5, 2, 12, 4, 32, 9, 94, 23, 289, 62, 910, 176, 2934, 512, 9686, 1551, 32540, 4822, 110780, 15266, 381676, 49141, 1328980, 160728, 4669367, 532890, 16535154, 1785162, 58965214, 6039328, 211591218, 20617808, 763535450, 70951548, 2769176514
Offset: 0

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Author

Peter Luschny, Jul 20 2016

Keywords

Crossrefs

Programs

  • Maple
    # Function QExtCatalan is defined in A274886.
    seq(max(QExtCatalan(n,q)), n=0..20);
  • Mathematica
    (* Function QExtCatalan is defined in A274886. *)
    Table[Max[CoefficientList[QExtCatalan[n] // FunctionExpand, q]], {n,0,30}]
  • Sage
    # uses[q_ext_catalan_number]
    # Function q_ext_catalan_number is in A274886.
    print([max(q_ext_catalan_number(n).list()) for n in (0..41)])
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