A302002 Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
0, 34, 48, 200, 2856, 14016, 122232, 813704, 6066698, 43025282, 311301306, 2237774274, 16116010598, 116014746014, 835190383512, 6012793756932, 43286754359604, 311629669798802, 2243474218816140, 16151152920460132
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..0..0..0. .0..0..1..0..0. .0..0..0..1..1. .0..0..1..1..0 ..1..1..1..0..0. .1..1..1..1..0. .1..1..0..1..0. .0..1..1..0..1 ..0..0..1..1..1. .1..0..1..0..0. .0..0..1..0..0. .0..0..1..1..1 ..1..1..0..0..0. .0..1..1..0..0. .1..1..1..0..1. .0..0..1..0..1 ..0..0..1..1..1. .0..0..1..1..1. .1..1..0..1..1. .1..1..0..1..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A301999.
Comments