A183728 - OEIS

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A183728

1/12 the number of (n+1) X 9 0..5 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease, and at least two adjacent blocks having the same increasing direction.

88331, 3528126, 130610844, 5355252106, 221403152762, 9546147995730, 460509744129719, 33429749952933774, 4646656755908387234, 935845545638421963156

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 8 of A183729.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions with the first block increasing clockwise for 3 X 9:

..1..2..1..0..1..5..2..5..1....1..2..1..0..1..0..1..4..5

..0..3..4..5..2..4..3..4..3....0..3..4..5..3..4..2..3..2