A234035 Number of (n+1)X(7+1) 0..4 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

1007683, 296931707, 89286112307, 27534564039521, 8571344620976281, 2681894305722454547, 841477590887025128591, 264465644640358475720745, 83208706795033150569763777, 26200115092244394335505246627

Offset

1,1

Comments

Column 7 of A234036

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..0..1..1..1..0..0..1..0....0..1..1..0..1..1..1..1....0..0..0..1..2..2..2..1
..0..0..1..0..0..0..0..1....1..0..1..1..1..1..1..1....0..0..1..1..1..2..2..1

Crossrefs

Sequence in context: A213904 A059925 A065327 * A330519 A388141 A066354

Adjacent sequences: A234032 A234033 A234034 * A234036 A234037 A234038

Keyword

nonn

Author

R. H. Hardin, Dec 18 2013

Status

approved