A276293 - cp's OEIS frontend

A276293 Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.

n	a(n)
1	1
2	4
3	11
4	31
5	88
6	250
7	710
8	2016
9	5724
10	16252
11	46144
12	131016
13	371992
14	1056192
15	2998832
16	8514544
17	24175232
18	68640416
19	194889824
20	553348096
21	1571113920
22	4460842944
23	12665612288
24	35961305216
25	102104457600
26	289903834112

[1, 4, 11, 31, 88, 250, 710, 2016, 5724, 16252, 46144, 131016, 371992, 1056192, 2998832, 8514544, 24175232, 68640416, 194889824, 553348096, 1571113920, 4460842944, 12665612288, 35961305216, 102104457600, 289903834112]

cp's OEIS Frontend

A276293 Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.

Table of values

List of values