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.

A130267 A051731 * A051340.

Original entry on oeis.org

1, 2, 2, 2, 1, 3, 3, 3, 1, 4, 2, 1, 1, 1, 5, 4, 4, 4, 1, 1, 6, 2, 1, 1, 1, 1, 1, 7, 4, 4, 2, 5, 1, 1, 1, 8, 3, 2, 4, 1, 1, 1, 1, 1, 9, 4, 4, 2, 2, 6, 1, 1, 1, 1, 10
Offset: 0

Views

Author

Gary W. Adamson, May 18 2007

Keywords

Comments

Row sums = A129235: (1, 4, 6, 11, 10, 20, ...).
Left border = A000005, d(n): (1, 2, 2, 3, 2, 4, ...).

Examples

			First few rows of the triangle:
  1;
  2, 2;
  2, 1, 3;
  3, 3, 1, 4;
  2, 1, 1, 1, 5;
  4, 4, 4, 1, 1, 6;
  2, 1, 1, 1, 1, 1, 7;
  ...
		

Crossrefs

Formula

Inverse Moebius transform of A051340.