A184773 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock singular

64, 424, 424, 2248, 8272, 2248, 13096, 108496, 108496, 13096, 73288, 1792144, 1967440, 1792144, 73288, 417256, 27993232, 62051344, 62051344, 27993232, 417256, 2358280, 454774672, 1444491280, 4975179472, 1444491280, 454774672, 2358280

Offset

1,1

Comments

Table starts

........64............424..............2248.................13096

.......424...........8272............108496...............1792144

......2248.........108496...........1967440..............62051344

.....13096........1792144..........62051344............4975179472

.....73288.......27993232........1444491280..........267277851856

....417256......454774672.......39939558160........18492329456080

...2358280.....7339536784.....1005763454224......1156853256240592

..13370536...119205236368....26695990774288.....77441892454241488

..75704776..1934859805840...688562611427344...5064538742140130512

.428889448.31437977902480.18047210235975952.336992694113719404496

Links

R. H. Hardin, Table of n, a(n) for n = 1..127

Example

Some solutions for 4X3
..1..0..3....2..0..3....2..2..0....1..2..2....0..0..1....2..2..1....2..1..1
..3..0..3....2..0..1....0..0..0....0..0..0....3..0..3....0..0..0....2..1..1
..2..0..2....0..0..3....3..0..0....3..0..1....3..0..2....2..0..1....0..0..0
..2..0..1....1..0..1....1..0..1....2..0..0....2..0..3....3..0..3....2..3..1

Crossrefs

Sequence in context: A017618 A343724 A231841 * A184765 A303799 A305244

Adjacent sequences: A184770 A184771 A184772 * A184774 A184775 A184776

Keyword

nonn,tabl

Author

R. H. Hardin Jan 21 2011

Status

approved