A216609 - cp's OEIS frontend

A216609 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nX3 array with new integer colors introduced in row major order.

n	a(n)
1	1
2	1
3	2
4	20
5	67
6	1335
7	6097
8	192713
9	1094076
10	49055292
11	329588907
12	19602119017
13	151146594991
14	11399696350555
15	98774751736976
16	9146845346099410
17	87700687826082507
18	9731199828137067515
19	102042888281439150263

[1, 1, 2, 20, 67, 1335, 6097, 192713, 1094076, 49055292, 329588907, 19602119017, 151146594991, 11399696350555, 98774751736976, 9146845346099410, 87700687826082507, 9731199828137067515, 102042888281439150263]

cp's OEIS Frontend

A216609 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nX3 array with new integer colors introduced in row major order.

Table of values

List of values