A262424 Number of (5+1)X(n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.

42, 144, 10206, 200880, 9401742, 326005344, 14036526126, 562188062160, 23753751161742, 985963486014144, 41471657300369646, 1736701374341409840, 72968249610859102542, 3062420548152290816544, 128633450602627230830766

Offset: 1

Author

R. H. Hardin, Sep 22 2015

Keywords

• nonn

Comments

Row 5 of A262420.

Examples

			Some solutions for n=3
..0..0..0..0....0..0..1..1....1..1..0..0....0..1..1..0....1..1..1..1
..0..1..1..0....1..1..0..0....0..0..0..0....1..0..0..1....0..0..0..0
..1..1..0..0....0..0..1..1....0..0..0..0....0..1..1..0....1..1..0..0
..0..1..1..0....0..0..1..1....1..0..0..1....1..1..0..0....1..1..0..0
..1..0..0..1....1..1..0..0....0..1..1..0....0..0..0..0....1..1..1..1
..0..0..0..0....1..1..0..0....1..0..0..1....0..0..1..1....1..1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A262420.

Formula

Empirical: a(n) = 42*a(n-1) +711*a(n-2) -29862*a(n-3) -141183*a(n-4) +5929686*a(n-5) [phone]*a(n-6) -434683746*a(n-7) -267400116*a(n-8) [phone]*a(n-9) [phone]*a(n-10) -69997156992*a(n-11)