A302336 - cp's OEIS frontend

A302336 Linear coefficient (in absolute value) of the quadratic polynomials giving the numbers of 2k-cycles in the n X n grid graph for n >= k-1.

n	a(n)
1	0
2	2
3	6
4	28
5	140
6	740
7	4056
8	22904
9	132344
10	778832
11	4652404
12	28140536
13	172021360
14	1061153560
15	6597813620
16	41307119692
17	260198053200
18	1647958588568
19	10488324116052
20	67046234983840
21	430300354820176
22	2771678138269600
23	17912347088664868
24	116113406138798112

[0, 2, 6, 28, 140, 740, 4056, 22904, 132344, 778832, 4652404, 28140536, 172021360, 1061153560, 6597813620, 41307119692, 260198053200, 1647958588568, 10488324116052, 67046234983840, 430300354820176, 2771678138269600, 17912347088664868, 116113406138798112]

cp's OEIS Frontend

A302336 Linear coefficient (in absolute value) of the quadratic polynomials giving the numbers of 2k-cycles in the n X n grid graph for n >= k-1.

Table of values

List of values