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.

A195953 Number of lower triangles of an n X n 0..8 array with each element equal to the number of its diagonal, antidiagonal, horizontal and vertical neighbors unequal to itself.

Original entry on oeis.org

1, 4, 2, 3, 7, 8, 10, 8, 8, 94, 118, 50
Offset: 1

Views

Author

R. H. Hardin Sep 25 2011

Keywords

Examples

			Some solutions for n=10
..2....................2....................2
..3.3..................3.3..................3.3
..4.6.3................4.7.3................5.7.3
..4.6.7.3..............4.8.6.3..............4.8.4.3
..5.8.6.6.3............5.7.6.7.3............5.4.4.4.3
..4.7.5.5.7.3..........4.7.8.6.6.3..........4.8.7.4.6.3
..4.7.5.5.8.6.3........5.4.4.4.4.4.3........5.7.4.4.6.7.3
..5.8.6.6.7.6.7.3......4.7.4.4.6.4.4.3......4.8.4.4.8.6.6.3
..4.7.7.6.7.8.6.6.3....5.8.7.6.6.4.8.7.3....4.7.7.4.7.7.8.7.3
..3.4.5.4.4.5.4.4.3.2..3.4.4.5.4.5.4.5.3.2..3.5.4.5.4.5.4.4.3.2