A237566 Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

311512, 4121060, 61521086, 977290740, 14891233160, 228407442348, 3615152813462, 55793291175056, 882176438911922, 13667993065228308, 217505797950500694, 3377924302868998888, 53802897865062024654

Offset

1,1

Comments

Column 7 of A237567

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Sequence in context: A205204 A205062 A257015 * A224631 A180461 A250371

Adjacent sequences: A237563 A237564 A237565 * A237567 A237568 A237569

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved