A185612 Number of (n+1)X4 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

361, 24993, 554305, 16830089, 455401149, 13132512119, 367637937923, 10506617192993, 296987801260129, 8464347660715807, 240114023418741889, 6835977634553467489, 194207139150443251969, 5526371145953118444347

Offset

1,1

Comments

Column 3 of A185614

Links

R. H. Hardin, Table of n, a(n) for n = 1..61

Example

Some solutions for 3X4
..2..1..2..0....0..1..1..2....1..2..2..2....0..0..0..2....1..0..2..0
..2..2..2..1....2..0..1..1....1..1..1..1....0..1..0..1....1..0..2..1
..1..1..1..1....1..1..2..1....2..1..0..1....1..0..1..1....0..1..1..1

Crossrefs

Sequence in context: A302385 A303106 A186869 * A302957 A232081 A231770

Adjacent sequences: A185609 A185610 A185611 * A185613 A185614 A185615

Keyword

nonn

Author

R. H. Hardin Jan 31 2011

Status

approved