A184488 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock sum greater than 4

31, 1983, 421879, 460055427, 2002349014445, 39657122226381527, 3342508236591318287277, 1238778403260497748171275569, 1987238481358577950495683464612101

Offset

1,1

Comments

Diagonal of A184497

Links

R. H. Hardin, Table of n, a(n) for n = 1..10

Example

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

Crossrefs

Sequence in context: A131751 A042863 A042860 * A218352 A297549 A292706

Adjacent sequences: A184485 A184486 A184487 * A184489 A184490 A184491

Keyword

nonn

Author

R. H. Hardin Jan 15 2011

Status

approved