A265229 - cp's OEIS frontend

A265229 Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal vertical neighbors and new values introduced sequentially from 0.

n	a(n)
1	1
2	2
3	7
4	43
5	372
6	4027
7	51871
8	773186
9	13083385
10	247698481
11	5186925696
12	119023766737
13	2969884019977
14	80056947698498
15	2318432654628847
16	71785166633148187
17	2366425763631216756
18	82748313392542136011

[1, 2, 7, 43, 372, 4027, 51871, 773186, 13083385, 247698481, 5186925696, 119023766737, 2969884019977, 80056947698498, 2318432654628847, 71785166633148187, 2366425763631216756, 82748313392542136011]

cp's OEIS Frontend

A265229 Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal vertical neighbors and new values introduced sequentially from 0.

Table of values

List of values