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A234115 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1 1
31, 1361, 231713, 157630963, 427196005695, 4625943683805313, 200376051988817866625, 34754816964141969688314115, 24157262935852623408023272643359, 67332158893994957162261589597358347857 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A234122

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..13

EXAMPLE

Some solutions for n=2

..2..1..2....2..1..1....1..2..1....1..1..1....2..1..2....1..1..1....1..0..1

..2..1..2....1..2..1....2..1..2....0..1..0....1..2..2....1..0..1....0..0..1

..2..2..1....1..2..1....2..1..2....0..0..0....2..2..1....0..0..1....1..0..1

CROSSREFS

Sequence in context: A049292 A289473 A069406 * A057008 A159487 A130661

Adjacent sequences:  A234112 A234113 A234114 * A234116 A234117 A234118

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2013

STATUS

approved

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Last modified September 16 08:14 EDT 2021. Contains 347469 sequences. (Running on oeis4.)