A135616 - cp's OEIS frontend

A135616 Number of permutations p of {1,2,...,n} such that p(x) is a polynomial in x, modulo n, of degree at most 2, for x=1,2,3,...,n.

n	a(n)
1	1
2	2
3	6
4	8
5	20
6	12
7	42
8	64
9	162
10	40
11	110
12	48
13	156
14	84
15	120
16	512
17	272
18	324
19	342
20	160
21	252
22	220
23	506
24	384
25	2500
26	312
27	4374
28	336
29	812
30	240
31	930
32	4096
33	660
34	544
35	840
36	1296
37	1332
38	684
39	936
40	1280

[1, 2, 6, 8, 20, 12, 42, 64, 162, 40, 110, 48, 156, 84, 120, 512, 272, 324, 342, 160, 252, 220, 506, 384, 2500, 312, 4374, 336, 812, 240, 930, 4096, 660, 544, 840, 1296, 1332, 684, 936, 1280]

cp's OEIS Frontend

A135616 Number of permutations p of {1,2,...,n} such that p(x) is a polynomial in x, modulo n, of degree at most 2, for x=1,2,3,...,n.

Table of values

List of values