A267662 - cp's OEIS frontend

A267662 Number of nX3 0..1 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	3
2	18
3	108
4	453
5	1800
6	6654
7	23967
8	84552
9	295176
10	1023321
11	3533484
12	12170886
13	41859891
14	143844024
15	494032074
16	1696231551
17	5822855280
18	19986766938
19	68599945065
20	235446171408
21	808076493654
22	2773384864119
23	9518456958738

[3, 18, 108, 453, 1800, 6654, 23967, 84552, 295176, 1023321, 3533484, 12170886, 41859891, 143844024, 494032074, 1696231551, 5822855280, 19986766938, 68599945065, 235446171408, 808076493654, 2773384864119, 9518456958738]

cp's OEIS Frontend

A267662 Number of nX3 0..1 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