login
A266078
Number of nX5 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.
1
1, 1, 5, 7, 29, 29, 55, 115, 221, 443, 851, 1659, 3318, 6531, 12883, 25491, 50374, 99493, 196918, 389027, 770195, 1523153, 3012689, 5958639, 11790926, 23319020, 46141333, 91261509, 180569396, 357189221, 706693599, 1397946605, 2765830557, 5471342440
OFFSET
1,3
COMMENTS
Column 5 of A266081.
LINKS
EXAMPLE
Some solutions for n=4
..2..3..2..0..0....0..0..0..0..0....0..0..0..0..0....0..2..3..2..0
..3..4..3..0..0....0..0..0..0..0....0..2..3..2..0....0..3..4..3..0
..2..3..2..0..0....0..0..0..0..0....0..3..4..3..0....0..2..3..2..0
..0..0..0..0..0....0..0..0..0..0....0..2..3..2..0....0..0..0..0..0
CROSSREFS
Cf. A266081.
Sequence in context: A307100 A229337 A227857 * A147993 A213901 A087901
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 20 2015
STATUS
approved