A216613 - cp's OEIS frontend

A216613 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of a 3 X n array with new integer colors introduced in row major order.

n	a(n)
1	1
2	2
3	2
4	15
5	41
6	716
7	2847
8	83440
9	426422
10	18171918
11	112072316
12	6423127757
13	46054057965
14	3376465219485
15	27457462735926
16	2486327138729353
17	22530435476364494
18	2454996141671330713
19	24463971326544703312

[1, 2, 2, 15, 41, 716, 2847, 83440, 426422, 18171918, 112072316, 6423127757, 46054057965, 3376465219485, 27457462735926, 2486327138729353, 22530435476364494, 2454996141671330713, 24463971326544703312]

cp's OEIS Frontend

A216613 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of a 3 X n array with new integer colors introduced in row major order.

Table of values

List of values