A319480 - cp's OEIS frontend

A319480 Number of ordered pairs (i,j) with 0 < i < j < prime(n)/2 such that R(i^2,prime(n)) > R(j^2,prime(n)), where R(k,p) (with p an odd prime and k an integer) denotes the unique integer r among 0,1,...,(p-1)/2 for which k is congruent to r or -r modulo p.

n	a(n)
2	0
3	0
4	1
5	3
6	7
7	10
8	14
9	19
10	41
11	42
12	74
13	79
14	85
15	100
16	154
17	163
18	207
19	224
20	245
21	309
22	318
23	342
24	449
25	536
26	590
27	553
28	581
29	715
30	738
31	856
32	912
33	1085
34	1037
35	1324
36	1229
37	1477
38	1442
39	1491
40	1785
41	1730
42	1952
43	1986
44	2240
45	2316
46	2191
47	2474
48	2748
49	2836
50	3176

[0, 0, 1, 3, 7, 10, 14, 19, 41, 42, 74, 79, 85, 100, 154, 163, 207, 224, 245, 309, 318, 342, 449, 536, 590, 553, 581, 715, 738, 856, 912, 1085, 1037, 1324, 1229, 1477, 1442, 1491, 1785, 1730, 1952, 1986, 2240, 2316, 2191, 2474, 2748, 2836, 3176]

cp's OEIS Frontend

A319480 Number of ordered pairs (i,j) with 0 < i < j < prime(n)/2 such that R(i^2,prime(n)) > R(j^2,prime(n)), where R(k,p) (with p an odd prime and k an integer) denotes the unique integer r among 0,1,...,(p-1)/2 for which k is congruent to r or -r modulo p.

Table of values

List of values