A183731 - cp's OEIS frontend

A183731 1/16 the number of (n+1) X 3 0..7 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.

n	a(n)
1	21
2	290
3	13169
4	550268
5	19849923
6	667017027
7	21320890377
8	659741463420
9	19939380387212
10	592112324464323
11	17343862233069362
12	502495529472928971
13	14428841233622907321
14	411240107421964502725
15	11647315145815312830954

[21, 290, 13169, 550268, 19849923, 667017027, 21320890377, 659741463420, 19939380387212, 592112324464323, 17343862233069362, 502495529472928971, 14428841233622907321, 411240107421964502725, 11647315145815312830954]

cp's OEIS Frontend

A183731 1/16 the number of (n+1) X 3 0..7 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.

Table of values

List of values