A275222 - cp's OEIS frontend

A275222 Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,0) and new values introduced in order 0..2.

n	a(n)
1	2
2	6
3	11
4	27
5	66
6	162
7	404
8	1007
9	2512
10	6271
11	15655
12	39084
13	97580
14	243626
15	608259
16	1518638
17	3791579
18	9466427
19	23634810
20	59008986
21	147327628
22	367832623
23	918367048
24	2292885359
25	5724642759
26	14292705300
27	35684571668
28	89093606034
29	222439846275

[2, 6, 11, 27, 66, 162, 404, 1007, 2512, 6271, 15655, 39084, 97580, 243626, 608259, 1518638, 3791579, 9466427, 23634810, 59008986, 147327628, 367832623, 918367048, 2292885359, 5724642759, 14292705300, 35684571668, 89093606034, 222439846275]

cp's OEIS Frontend

A275222 Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,0) and new values introduced in order 0..2.

Table of values

List of values