A279460 - cp's OEIS frontend

A279460 Number of n X 2 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	0
2	2
3	6
4	20
5	66
6	210
7	658
8	2036
9	6236
10	18928
11	57032
12	170790
13	508748
14	1508462
15	4454576
16	13107640
17	38446722
18	112448726
19	328044512
20	954771282
21	2772970950
22	8038036642
23	23258558892
24	67190053760
25	193807573324
26	558249440024
27	1605908314802

[0, 2, 6, 20, 66, 210, 658, 2036, 6236, 18928, 57032, 170790, 508748, 1508462, 4454576, 13107640, 38446722, 112448726, 328044512, 954771282, 2772970950, 8038036642, 23258558892, 67190053760, 193807573324, 558249440024, 1605908314802]

cp's OEIS Frontend

A279460 Number of n X 2 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values