A208704 - cp's OEIS frontend

A208704 Number of nX3 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

n	a(n)
1	4
2	28
3	196
4	1372
5	9604
6	67228
7	470596
8	3294172
9	23059204
10	161414428
11	1129900996
12	7909306972
13	55365148804
14	387556041628
15	2712892291396
16	18990246039772
17	132931722278404
18	930522055948828
19	6513654391641796
20	45595580741492572

[4, 28, 196, 1372, 9604, 67228, 470596, 3294172, 23059204, 161414428, 1129900996, 7909306972, 55365148804, 387556041628, 2712892291396, 18990246039772, 132931722278404, 930522055948828, 6513654391641796, 45595580741492572]

cp's OEIS Frontend

A208704 Number of nX3 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

List of values