A233144 Number of nX5 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, 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, 65120, 54777233, 46648134615, 39758352524643, 33888199682535539, 28884899976580380572, 24620306768807426333200, 20985343167021965911162917, 17887048875466336149601526265, 15246189454569664730345411176252
Offset: 1
Keywords
Examples
Some solutions for n=2 ..0..1..0..4..2....0..1..2..5..4....0..1..2..1..2....0..1..2..4..5 ..3..0..3..4..0....1..0..2..5..2....1..1..1..0..2....0..1..0..2..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments