A284768 Number of n X 5 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
6, 206, 5637, 145822, 4219759, 121021322, 3595841703, 107047691558, 3230133817408, 97858271141246, 2984356113230844, 91344755158599286, 2807007399506811549, 86507823542467916384, 2673333189589167211891
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..0..0..1. .0..1..1..0..0. .0..1..1..0..0. .0..1..0..1..0 ..1..0..1..1..1. .1..0..0..1..1. .0..0..1..1..0. .1..1..0..0..0 ..1..0..0..1..0. .0..0..0..1..1. .1..1..1..0..0. .1..0..0..1..0 ..0..1..0..1..0. .0..0..1..1..1. .0..0..1..0..0. .1..0..1..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..80
Crossrefs
Cf. A284771.
Comments