A233229 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order

2136, 9757236, 59679029456, 366805442634477, 2262465262533395122, 13966565723905519312347, 86240738075580821512843673, 532562944711463255634918419168, 3288824486303682666484477919564597

Offset

1,1

Comments

Column 7 of A233230

Links

R. H. Hardin, Table of n, a(n) for n = 1..90

Example

Some solutions for n=2
..0..0..1..5..1..1..5....0..0..0..1..5..2..2....0..0..0..0..0..1..2
..0..0..2..1..5..1..2....0..0..3..3..1..2..2....0..0..4..4..0..0..1

Crossrefs

Sequence in context: A067199 A064249 A206007 * A233146 A233238 A233112

Adjacent sequences: A233226 A233227 A233228 * A233230 A233231 A233232

Keyword

nonn

Author

R. H. Hardin, Dec 06 2013

Status

approved