A072205 - cp's OEIS frontend

A072205 a(n) = (p^2 - p + 2)/2 for p = prime(n); number of squares modulo p^2.

n	a(n)
1	2
2	4
3	11
4	22
5	56
6	79
7	137
8	172
9	254
10	407
11	466
12	667
13	821
14	904
15	1082
16	1379
17	1712
18	1831
19	2212
20	2486
21	2629
22	3082
23	3404
24	3917
25	4657
26	5051
27	5254
28	5672
29	5887
30	6329
31	8002
32	8516
33	9317
34	9592
35	11027
36	11326
37	12247
38	13204
39	13862
40	14879
41	15932
42	16291
43	18146
44	18529

[2, 4, 11, 22, 56, 79, 137, 172, 254, 407, 466, 667, 821, 904, 1082, 1379, 1712, 1831, 2212, 2486, 2629, 3082, 3404, 3917, 4657, 5051, 5254, 5672, 5887, 6329, 8002, 8516, 9317, 9592, 11027, 11326, 12247, 13204, 13862, 14879, 15932, 16291, 18146, 18529]

cp's OEIS Frontend

A072205 a(n) = (p^2 - p + 2)/2 for p = prime(n); number of squares modulo p^2.

Table of values

List of values