A180785 - cp's OEIS frontend

A180785 Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 1..n-1.

n	a(n)
1	0
2	1
3	3
4	14
5	46
6	106
7	254
8	494
9	939
10	1528
11	2668
12	3958
13	6334
14	8641
15	13239
16	17240
17	25227
18	31128
19	44660
20	53786
21	74111
22	86712
23	118779
24	134632
25	181755
26	202431
27	266175
28	296323
29	387533
30	412008
31	544121
32	582432
33	736568
34	786710
35	1006750
36	1037604
37	1336781

[0, 1, 3, 14, 46, 106, 254, 494, 939, 1528, 2668, 3958, 6334, 8641, 13239, 17240, 25227, 31128, 44660, 53786, 74111, 86712, 118779, 134632, 181755, 202431, 266175, 296323, 387533, 412008, 544121, 582432, 736568, 786710, 1006750, 1037604, 1336781]

cp's OEIS Frontend

A180785 Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 1..n-1.

Table of values

List of values