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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A128190 Inverse of A128189.

Original entry on oeis.org

1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, -1, 0, 1, 0, 0, 1, -1, 0, 1, 0, 0, 0, 0, -1, 0, 1, 0, 0, -1, 1, 0, -1, 0, 1, 0, 0, 1, 0, 0, 0, -1, 0, 1, 0, 0, 0, -1, 1, 0, 0, -1, 0, 1
Offset: 0

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Author

Gary W. Adamson, Feb 17 2007

Keywords

Comments

Row sums = 1, 2, 1, 1, 0, 1, 0, 0, 1, 0, ... (the first 10 terms of A104162).

Examples

			First few rows of the triangle:
  1;
  1,  1;
  0,  0,  1;
  0,  0,  0,  1;
  0,  0, -1,  0,  1;
  0,  0,  1, -1,  0,  1;
  ...

Crossrefs

Cf. A104162, A128189.

Formula

Inverse of A128189 as an infinite lower triangular matrix.
Showing 1-1 of 1 results.

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