A183463 - OEIS

A183463

Number of (n+4)X10 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s

21, 309, 1621, 6125, 42613, 248303, 1724088, 13731628, 97119162, 756707222, 6200379979, 47495092665, 381529656480, 3147373531932, 24939108924275, 202897330702581, 1669347485119689, 13414358001681700, 109481811441992527

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 6 of A183465

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..54

EXAMPLE

Some solutions for 7X10

..0..0..0..1..0..0..1..0..0..0....0..0..0..1..1..0..1..0..0..0

..0..0..1..1..1..1..1..1..0..0....0..0..1..1..0..1..1..1..0..0

..0..1..0..0..0..0..0..0..1..0....0..1..0..0..0..0..0..0..1..0

..1..1..0..0..0..0..0..0..1..1....1..1..0..0..0..0..0..0..1..1

..0..1..0..0..0..0..0..0..1..0....0..1..0..0..0..0..0..0..1..0

..0..0..1..1..1..1..1..1..0..0....0..0..1..1..0..1..1..1..0..0

..0..0..0..1..0..0..1..0..0..0....0..0..0..1..1..0..1..0..0..0

CROSSREFS

Sequence in context: A019488 A025929 A021244 * A125478 A018054 A021484

Adjacent sequences: A183460 A183461 A183462 * A183464 A183465 A183466

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved