A180796 - cp's OEIS frontend

A180796 Number of distinct solutions of sum{i=1..4}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.

n	a(n)
1	1
2	9
3	45
4	205
5	620
6	1957
7	4507
8	11171
9	22146
10	45350
11	78661
12	151695
13	234757
14	405587
15	621513
16	995842
17	1396875
18	2214555
19	2949517
20	4476311
21	5932188
22	8399584
23	10743228
24	15648807
25	19058660
26	26160160
27	32743869
28	43862757
29	52161089
30	71513890
31	82339801

[1, 9, 45, 205, 620, 1957, 4507, 11171, 22146, 45350, 78661, 151695, 234757, 405587, 621513, 995842, 1396875, 2214555, 2949517, 4476311, 5932188, 8399584, 10743228, 15648807, 19058660, 26160160, 32743869, 43862757, 52161089, 71513890, 82339801]

cp's OEIS Frontend

A180796 Number of distinct solutions of sum{i=1..4}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.

Table of values

List of values