A185794 Number of (n+1)X6 binary arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

676, 1408, 3196, 9368, 23064, 61676, 149828, 433296, 1073036, 3000848, 7423780, 21476064, 53645816, 153197812, 383014100, 1109241856, 2792472812, 8043408452, 20257150840, 58652173360, 148613711308, 429039760096, 1086671505564

Offset

1,1

Comments

Column 5 of A185798

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Robert Israel, Linear recurrence of order 120 for n >= 123

Robert Israel, Maple-assisted derivation of recurrence

Formula

Linear recurrence of order 120 for n >= 123 (see links). - Robert Israel, Oct 31 2019

Example

Some solutions for 3X6
..0..0..0..1..0..0....0..0..0..1..0..1....1..0..0..1..1..0....0..0..1..0..1..1
..0..0..1..1..0..0....0..0..1..0..0..1....1..1..1..1..1..1....0..0..1..1..0..1
..1..1..1..1..1..0....0..1..0..0..0..0....1..1..0..0..1..1....0..1..1..1..1..0

Crossrefs

Sequence in context: A309787 A064963 A300984 * A253330 A255076 A253323

Adjacent sequences: A185791 A185792 A185793 * A185795 A185796 A185797

Keyword

nonn

Author

R. H. Hardin, Feb 04 2011

Status

approved