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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A128807 A115361 * A007318.

Original entry on oeis.org

1, 2, 1, 1, 2, 1, 3, 4, 3, 1, 1, 4, 6, 4, 1, 2, 7, 11, 10, 5, 1, 1, 6, 15, 20, 15, 6, 1, 4, 11, 24, 36, 35, 21, 7, 1, 1, 8, 28, 56, 70, 56, 28, 8, 1, 2, 13, 42, 88, 127, 126, 84, 36, 9, 1
Offset: 0

Views

Author

Gary W. Adamson, Apr 06 2007

Keywords

Comments

Row sums = A127804: (1, 3, 4, 11, 16, 36, 64, ...). Left column = the Ruler sequence, A001511: (1, 2, 1, 3, 1, 2, 1, 4, ...). A129262 = A007318 * A115361.

Examples

			First few rows of the triangle:
  1;
  2,  1;
  1,  2,  1;
  3,  4,  3,  1;
  1,  4,  6,  4,  1;
  2,  7, 11, 10,  5,  1;
  1,  6, 15, 20, 15,  6,  1;
  4, 11, 24, 36, 35, 21,  7,  1;
  ...

Crossrefs

Cf. A115361, A007318, A129262, A001511, A127804.

Formula

A115361 * A007318 as infinite lower triangular matrices.
Showing 1-1 of 1 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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