A216339 - cp's OEIS frontend

A216339 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 3Xn array with new integer colors introduced in row major order.

n	a(n)
1	2
2	3
3	15
4	42
5	602
6	2440
7	61915
8	322776
9	12297978
10	77360796
11	4044784633
12	29562890886
13	2004648242718
14	16604827619828
15	1404640885455993
16	12954736337254696
17	1328741141974378250
18	13465808369740333664

[2, 3, 15, 42, 602, 2440, 61915, 322776, 12297978, 77360796, 4044784633, 29562890886, 2004648242718, 16604827619828, 1404640885455993, 12954736337254696, 1328741141974378250, 13465808369740333664]

cp's OEIS Frontend

A216339 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 3Xn array with new integer colors introduced in row major order.

Table of values

List of values