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.

A143318 Triangle read by rows: A143317 * A000012.

Original entry on oeis.org

1, 2, -1, 3, -1, -1, 4, -3, 0, 0, 5, -1, -1, -1, -1, 6, -6, -2, 1, 1, 1, 7, -1, -1, -1, -1, -1, -1, 8, -7, 0, 0, 0, 0, 0, 0, 9, -4, -4, 0, 0, 0, 0, 0, 0, 10, -8, -2, -2, -2, 1, 1, 1, 1, 1, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, -16, -4, 3, 3, 3, 0, 0, 0, 0, 0, 0, 13, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
Offset: 1

Views

Author

Gary W. Adamson, Aug 07 2008

Keywords

Comments

Right border = mu(n), A008683.
Row sums = 1.

Examples

			First few rows of the triangle:
  1;
  2, -1;
  3, -1, -1;
  4, -3,  0,  0;
  5, -1, -1, -1, -1;
  6, -6, -2,  1,  1,  1;
  7, -1, -1, -1, -1, -1, -1;
  ...
		

Crossrefs

Formula

By rows, partial sums of A143317 terms starting from the right.

Extensions

a(73) = 0, a(78) = 0 corrected and more terms from Georg Fischer, Jun 06 2023