A253292 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally

26784, 167832, 1029888, 8153960, 61286116, 465921688, 3524494796, 26879615668, 204459584768, 1560668372324, 11882769388376, 90517446353584, 689680753666852, 5257319067276484, 40057456786744360, 305206750112569024

Offset

1,1

Comments

Column 4 of A253294

Links

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

Example

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

Crossrefs

Sequence in context: A046710 A251303 A196937 * A253162 A185774 A234158

Adjacent sequences: A253289 A253290 A253291 * A253293 A253294 A253295

Keyword

nonn

Author

R. H. Hardin, Dec 29 2014

Status

approved