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.

A353111 Base-3 representation of A000422(n).

Original entry on oeis.org

1, 210, 102220, 12221001, 2202111220, 1020020120010, 112101212202101, 20002221022010100, 2112211110001000200, 1001100202012200011001, 10221012122122021102212210, 120212211002121222001110211020, 2100201122222221220212010020220201
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(3, 20)

Formula

a(n) = A007089(A000422(n)).