A216078 - cp's OEIS frontend

A216078 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 2 array with new integer colors introduced in row major order.

n	a(n)
1	1
2	1
3	3
4	7
5	27
6	87
7	409
8	1657
9	9089
10	43833
11	272947
12	1515903
13	10515147
14	65766991
15	501178937
16	3473600465
17	28773452321
18	218310229201
19	1949230218691
20	16035686850327
21	153281759047387
22	1356791248984295
23	13806215066685433
24	130660110400259849
25	1408621900803060705

[1, 1, 3, 7, 27, 87, 409, 1657, 9089, 43833, 272947, 1515903, 10515147, 65766991, 501178937, 3473600465, 28773452321, 218310229201, 1949230218691, 16035686850327, 153281759047387, 1356791248984295, 13806215066685433, 130660110400259849, 1408621900803060705]

cp's OEIS Frontend

A216078 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 2 array with new integer colors introduced in row major order.

Table of values

List of values