A263369 Number of (n+1)X(4+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits.

5, 29, 865, 24711, 826249, 27274339, 943196037, 32850517101, 1149496602927, 40220123519645, 1407588920518393, 49261304582570101, 1724108144663303417, 60343312266592642007, 2112014898505756338577, 73920482899832743087347

Offset: 1

Author

R. H. Hardin, Oct 16 2015

Keywords

• nonn

Comments

Column 4 of A263373.

Examples

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

Links

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

Crossrefs

Cf. A263373.