A204679 - cp's OEIS frontend

A204679 Number of n X 2 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order.

n	a(n)
1	2
2	15
3	159
4	2191
5	31168
6	447343
7	6427791
8	92387812
9	1327953799
10	19087798375
11	274365294336
12	3943689122935
13	56686048473223
14	814797524429284
15	11711788424726319
16	168343648648695295
17	2419748633865949120

[2, 15, 159, 2191, 31168, 447343, 6427791, 92387812, 1327953799, 19087798375, 274365294336, 3943689122935, 56686048473223, 814797524429284, 11711788424726319, 168343648648695295, 2419748633865949120]

cp's OEIS Frontend

A204679 Number of n X 2 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order.

Table of values

List of values