A267912 - cp's OEIS frontend

A267912 Number of 1 X n 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

n	a(n)
1	1
2	2
3	4
4	11
5	29
6	77
7	201
8	525
9	1361
10	3525
11	9097
12	23453
13	60353
14	155189
15	398649
16	1023501
17	2626289
18	6736677
19	17274601
20	44286845
21	113516321
22	290925845
23	745515417
24	1910267373
25	4894426193
26	12539689989
27	32125783369
28	82301320541
29	210838008449

[1, 2, 4, 11, 29, 77, 201, 525, 1361, 3525, 9097, 23453, 60353, 155189, 398649, 1023501, 2626289, 6736677, 17274601, 44286845, 113516321, 290925845, 745515417, 1910267373, 4894426193, 12539689989, 32125783369, 82301320541, 210838008449]

cp's OEIS Frontend

A267912 Number of 1 X n 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

Table of values

List of values