A222676 Number of nX5 0..3 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
5, 25, 142, 5374, 69973, 3759625, 65204276, 4282689196, 75920948818, 5186372294012, 90996224707074, 6335072237466211, 109968037172246262, 7741427275251672333, 133384891659276633714, 9457744846017795645816
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..0..0..1....0..1..2..1..1....0..1..1..1..1....0..0..0..1..0 ..0..0..0..0..2....1..1..1..1..1....2..1..1..1..1....0..0..0..1..1 ..0..0..0..0..0....1..1..1..1..1....3..1..1..1..1....0..0..0..1..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..34
Comments