A219073 - cp's OEIS frontend

A219073 Hilltop maps: number of n X 3 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 n X 3 array.

n	a(n)
1	5
2	47
3	337
4	2469
5	18499
6	137251
7	1019123
8	7573641
9	56263253
10	417979331
11	3105269893
12	23069495037
13	171386678155
14	1273258576351
15	9459233511263
16	70274099126769
17	522077106920261
18	3878591175268919
19	28814650755208777

[5, 47, 337, 2469, 18499, 137251, 1019123, 7573641, 56263253, 417979331, 3105269893, 23069495037, 171386678155, 1273258576351, 9459233511263, 70274099126769, 522077106920261, 3878591175268919, 28814650755208777]

cp's OEIS Frontend

A219073 Hilltop maps: number of n X 3 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 n X 3 array.

Table of values

List of values