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.

A353112 Base-4 representation of A000422(n).

Original entry on oeis.org

1, 111, 11001, 1003201, 31100301, 2133233301, 131030232301, 11032113332301, 322313212202301, 22032322210302301, 100022230001210102301, 123202121121121130102301, 232213121102313132210102301, 1032130122202213111001210102301
Offset: 1

Views

Author

Seiichi Manyama, Apr 24 2022

Keywords

Crossrefs

Programs

  • Ruby
    def A(k, n)
      (1..n).map{|i| (1..i).to_a.reverse.join.to_i.to_s(k).to_i}
    end
    p A(4, 20)

Formula

a(n) = A007090(A000422(n)).