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.

A207860 Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically.

Original entry on oeis.org

16, 256, 1232, 5929, 44121, 328329, 2047902, 12773476, 85393582, 570875449, 3711466941, 24129583569, 158646920796, 1043070030864, 6826658594148, 44678944061361, 292963768764021, 1920989217886281, 12586269890069730
Offset: 1

Views

Author

R. H. Hardin Feb 21 2012

Keywords

Comments

Row 5 of A207858

Examples

			Some solutions for n=4
..1..1..0..0....1..1..0..1....1..0..1..1....1..0..1..1....0..0..1..1
..0..0..1..1....1..0..0..1....1..1..0..0....1..0..1..1....1..1..0..0
..0..0..1..1....0..0..1..1....1..1..0..0....0..1..1..1....1..1..0..0
..0..0..1..1....0..1..1..0....0..1..1..1....0..1..1..0....1..0..0..1
..0..1..1..0....1..1..0..0....0..1..1..1....1..1..0..0....0..0..1..1