A230685 Number of nX6 0..6 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero

0, 0, 68, 24050, 2756394, 272728160, 25579990362, 2350935391670, 214207950466488, 19447388042814192, 1762844647027428630, 159690564587289765758, 14461754182475369666696, 1309512672900097786756946

Offset

1,3

Comments

Column 6 of A230686

Links

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

Example

Some solutions for n=4
..0..1..2..1..2..1....0..1..2..3..4..5....0..1..2..1..0..6....0..1..2..1..0..6
..2..3..4..3..0..4....0..1..2..4..6..0....0..3..0..5..5..4....0..3..2..6..1..2
..2..5..2..6..5..4....0..6..5..2..1..0....4..5..6..2..3..2....4..5..5..4..3..2
..6..0..1..2..3..2....3..4..3..2..6..5....6..0..1..0..6..5....6..0..1..2..1..0

Crossrefs

Sequence in context: A159365 A145623 A307137 * A093234 A177666 A292607

Adjacent sequences: A230682 A230683 A230684 * A230686 A230687 A230688

Keyword

nonn

Author

R. H. Hardin, Oct 27 2013

Status

approved