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.

A374890 Obverse convolution (n^2)**A000045; see Comments.

Original entry on oeis.org

0, 1, 8, 180, 7200, 510000, 58810752, 10721443824, 3000030566400, 1271536241976000, 808142435100000000, 766737236353300692480, 1083811655995484233973760, 2283119816756708041781760000, 7179069918231931831907004518400, 33781506659124051515150232000000000
Offset: 0

Views

Author

Clark Kimberling, Sep 14 2024

Keywords

Comments

See A374848 for the definition of obverse convolution and a guide to related sequences.

Crossrefs

Programs

  • Mathematica
    s[n_] := n^2; t[n_] := Fibonacci[n];
    u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
    Table[u[n], {n, 0, 20}]