

A207467


T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically


11



2, 4, 4, 6, 16, 6, 9, 36, 36, 10, 13, 81, 98, 100, 16, 18, 169, 271, 358, 256, 26, 25, 324, 677, 1307, 1152, 676, 42, 34, 625, 1504, 4219, 5369, 3910, 1764, 68, 46, 1156, 3399, 11760, 21517, 23645, 12994, 4624, 110, 62, 2116, 7220, 33393, 71928, 119965, 101233
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OFFSET

1,1


COMMENTS

Table starts
..2....4.....6......9......13.......18........25........34.........46
..4...16....36.....81.....169......324.......625......1156.......2116
..6...36....98....271.....677.....1504......3399......7220......15184
.10..100...358...1307....4219....11760.....33393.....88198.....229458
.16..256..1152...5369...21517....71928....247631....778010....2406006
.26..676..3910..23645..119965...491948...2090927...7990970...29983194
.42.1764.12994.101233..644401..3205650..16675001..76629370..345252578
.68.4624.43596.439063.3523073.21396734.136803627.760840082.4139073950


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..337


EXAMPLE

Some solutions for n=4 k=3
..0..1..0....1..1..0....0..0..1....1..1..1....0..1..0....0..0..1....0..0..1
..1..0..0....1..0..1....0..1..0....1..1..0....1..1..0....0..1..0....1..0..0
..1..0..1....1..0..1....0..1..0....1..0..0....1..1..1....1..1..0....1..1..0
..1..1..1....0..1..0....0..1..0....1..0..1....1..0..1....1..0..0....0..1..0


CROSSREFS

Column 1 is A006355(n+2)
Column 2 is A206981
Row 1 is A171861(n+1)
Row 2 is A207025
Row 3 is A207112
Sequence in context: A207949 A207346 A207895 * A207918 A207519 A208698
Adjacent sequences: A207464 A207465 A207466 * A207468 A207469 A207470


KEYWORD

nonn,tabl


AUTHOR

R. H. Hardin Feb 18 2012


STATUS

approved



