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.

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A132819 A001263 * A127773.

Original entry on oeis.org

1, 1, 3, 1, 9, 6, 1, 18, 36, 10, 1, 30, 120, 100, 15, 1, 45, 300, 500, 225, 21, 1, 63, 630, 1750, 1575, 441, 28, 1, 84, 1176, 4900, 7350, 4116, 784, 36, 1, 108, 2016, 11760, 26460, 24696, 9408, 1296, 45, 1, 135, 3240, 25200, 79380, 111132, 70560, 19440
Offset: 1

Views

Author

Gary W. Adamson, Sep 02 2007

Keywords

Comments

Row sums = A132820: (1, 4, 16, 65, 266, ...).

Examples

			First few rows of the triangle are:
  1;
  1,  3;
  1,  9,   6;
  1, 18,  36,  10;
  1, 30, 120, 100,  15;
  1, 45, 300, 500, 225, 21;
  ...

Crossrefs

Cf. A001263, A127773, A132820.

Formula

A001263 * A127773 as infinite lower triangular matrices.
Showing 1-1 of 1 results.

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