A183462 Number of (n+4)X9 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s

4, 59, 498, 1577, 8702, 42613, 210362, 1459669, 7676361, 44631710, 307975889, 1766468801, 10941194118, 74842408447, 452000693891, 2882180117494, 19523455903949, 121423010910314, 784247000876085, 5259836130609437

Offset

1,1

Comments

Column 5 of A183465

Links

R. H. Hardin, Table of n, a(n) for n = 1..106

Example

Some solutions for 7X9
..0..0..1..1..0..1..0..0..0....0..0..0..0..0..1..0..0..0
..0..1..1..0..1..1..1..0..0....0..0..0..0..1..1..1..0..0
..1..0..0..0..0..0..0..1..0....0..0..0..1..0..0..0..1..0
..1..1..0..0..0..0..0..1..1....0..0..1..1..0..0..0..1..1
..1..0..0..0..0..1..0..1..0....0..0..0..1..0..1..0..1..0
..0..1..1..0..1..1..1..0..0....0..0..0..0..1..1..1..0..0

Crossrefs

Sequence in context: A200048 A037066 A113251 * A093597 A257069 A199107

Adjacent sequences: A183459 A183460 A183461 * A183463 A183464 A183465

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved