A233227 Number of nX5 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.
99, 39203, 21895530, 12389989684, 7027777888700, 3987381898274165, 2262465262533395122, 1283750879072515499846, 728417859359640269016202, 413314485961750753937325815, 234520446849081354380794520582
Offset: 1
Keywords
Examples
Some solutions for n=2 ..0..1..0..1..1....0..1..1..2..1....0..0..1..1..2....0..1..5..1..2 ..1..2..2..1..5....1..1..2..1..5....1..3..0..1..2....0..1..2..1..5
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments