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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
OFFSET
1,1
COMMENTS
Diagonal of A234122
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 19 2013
STATUS
approved