A208264 - cp's OEIS frontend

A208264 Number of n X 3 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 left-upward diagonal neighbors.

n	a(n)
1	4
2	25
3	161
4	1033
5	6631
6	42563
7	273205
8	1753657
9	11256431
10	72253147
11	463780861
12	2976931745
13	19108426759
14	122653794067
15	787294181189
16	5053509615817
17	32437632650335
18	208211736387083
19	1336476297041869
20	8578617726111793

[4, 25, 161, 1033, 6631, 42563, 273205, 1753657, 11256431, 72253147, 463780861, 2976931745, 19108426759, 122653794067, 787294181189, 5053509615817, 32437632650335, 208211736387083, 1336476297041869, 8578617726111793]

cp's OEIS Frontend

A208264 Number of n X 3 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 left-upward diagonal neighbors.

Table of values

List of values