A231134 - cp's OEIS frontend

A231134 Number of (n+1) X (2+1) black-square subarrays of 0..2 arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

n	a(n)
1	2
2	9
3	40
4	182
5	808
6	3688
7	16368
8	74728
9	331648
10	1514160
11	6719936
12	30680320
13	136161152
14	621652928
15	2758934016
16	12596099456
17	55902265856
18	255225567744
19	1132706802688
20	5171449356800
21	22951211032576
22	104785303002112

[2, 9, 40, 182, 808, 3688, 16368, 74728, 331648, 1514160, 6719936, 30680320, 136161152, 621652928, 2758934016, 12596099456, 55902265856, 255225567744, 1132706802688, 5171449356800, 22951211032576, 104785303002112]

cp's OEIS Frontend

A231134 Number of (n+1) X (2+1) black-square subarrays of 0..2 arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Table of values

List of values