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A184488 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock sum greater than 4 1
31, 1983, 421879, 460055427, 2002349014445, 39657122226381527, 3342508236591318287277, 1238778403260497748171275569, 1987238481358577950495683464612101 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 18 20:02 EDT 2019. Contains 326109 sequences. (Running on oeis4.)