A230568 Number of nX5 0..4 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 5, and upper left element zero

0, 0, 60, 2582, 91084, 3026090, 98987768, 3223042422, 104788977596, 3405425285562, 110653999572768, 3595375335417134, 116819564313186548, 3795641095132064914, 123325857241647906680, 4007033504236917243974

Offset

1,3

Comments

Column 5 of A230571

Links

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

Formula

Empirical: a(n) = 48*a(n-1) -560*a(n-2) +1930*a(n-3) -5031*a(n-4) +56930*a(n-5) -215108*a(n-6) +99076*a(n-7) +178084*a(n-8) -100200*a(n-9) for n>10

Example

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

Crossrefs

Sequence in context: A057848 A082670 A084659 * A180373 A264947 A004297

Adjacent sequences: A230565 A230566 A230567 * A230569 A230570 A230571

Keyword

nonn

Author

R. H. Hardin, Oct 23 2013

Status

approved