A204862 Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..1 introduced in row major order

1437, 7127, 36865, 192080, 1013668, 5369493, 28334280, 149505326, 790698276, 4174729955, 22050216974, 116497519764, 615331114030, 3250347051592, 17169846689204, 90695916099313, 479084441304253, 2530691611653147

Offset

1,1

Comments

Column 3 of A204867

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..0..0..0..1..1....0..1..0..0..1....0..1..1..1..1....0..0..0..0..0
..1..0..1..0..1....1..0..0..1..1....1..1..0..0..0....1..1..0..1..0
..1..1..1..1..1....1..0..0..1..1....1..1..0..0..1....1..1..1..1..1
..0..0..0..0..0....0..1..0..1..0....0..1..1..0..1....1..0..0..0..0
..1..0..0..1..0....0..0..0..1..1....0..1..1..0..1....0..0..0..1..1

Crossrefs

Sequence in context: A143475 A245948 A221004 * A227494 A352249 A351677

Adjacent sequences: A204859 A204860 A204861 * A204863 A204864 A204865

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved