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

31, 1361, 231713, 157630963, 427196005695, 4625943683805313, 200376051988817866625, 34754816964141969688314115, 24157262935852623408023272643359, 67332158893994957162261589597358347857

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