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.

A129555 A054523 * A129372.

Original entry on oeis.org

1, 1, 1, 3, 0, 1, 2, 1, 0, 1, 5, 0, 0, 0, 1, 3, 3, 1, 0, 0, 1, 7, 0, 0, 0, 0, 0, 1, 4, 2, 0, 1, 0, 0, 0, 1, 9, 0, 3, 0, 0, 0, 0, 0, 1, 5, 5, 0, 0, 1, 0, 0, 0, 0, 1
Offset: 0

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Author

Gary W. Adamson, Apr 20 2007

Keywords

Comments

Row sums = A002131: (1, 2, 4, 4, 6, 8, 8, 8, 13, 12, ...). Left column = A016741: (1, 1, 3, 2, 5, 3, 7, ...).

Examples

			First few rows of the triangle:
  1;
  1, 1;
  3, 0, 1;
  2, 1, 0, 1;
  5, 0, 0, 0, 1;
  3, 3, 1, 0, 0, 1;
  7, 0, 0, 0, 0, 0, 1;
  4, 2, 0, 1, 0, 0, 0, 1;
  9, 0, 3, 0, 0, 0, 0, 0, 1;
  ...
		

Crossrefs

Formula

A054523 * A129372 as infinite lower triangular matrices.