A214234 Number of 0..7 colorings of an nX5 array circular in the 5 direction with new values 0..7 introduced in row major order.

11, 7749, 35910351, 283323771619, 2440058302217191, 21284607690377676689, 186014154011114838330931, 1626099752980474200170964309, 14215638367039562675161610116971, 124276276119905578738815409505646829

Offset: 1

Author

R. H. Hardin Jul 08 2012

Keywords

• nonn

Comments

Column 4 of A214238

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..65

Formula

Empirical: a(n) = 10629*a(n-1) -17350472*a(n-2) [phone]*a(n-3) -1150563633112*a(n-4) [phone]*a(n-5) -1602676444724896*a(n-6) +14117645719614888*a(n-7) -45952444522339344*a(n-8) +33030412555840128*a(n-9)