A263371 Number of (n+1)X(6+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.

19, 367, 107514, 27274339, 8491666657, 2535097569590, 787253224440475, 245171742019939573, 76738178529099193548, 24012353212352081646593, 7515855702189389861141905, 2352317017039363043975969464

Offset

1,1

Comments

Column 6 of A263373.

Links

R. H. Hardin, Table of n, a(n) for n = 1..188

Example

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

Crossrefs

Cf. A263373.

Sequence in context: A057685 A243399 A041686 * A023283 A075839 A158592

Adjacent sequences: A263368 A263369 A263370 * A263372 A263373 A263374

Keyword

nonn

Author

R. H. Hardin, Oct 16 2015

Status

approved