A361071 - cp's OEIS frontend

A361071 Let c1(p) be the number of primes <= p with an odd number of 1's in base 2, and let c2(p) be the number of primes <= p with an even number of 1's in base 2. a(n) is the least prime p such that abs(c1(p) - c2(p)) >= n.

n	a(n)
1	2
2	13
3	41
4	61
5	67
6	79
7	109
8	131
9	137
10	173
11	179
12	181
13	191
14	193
15	211
16	223
17	227
18	229
19	233
20	239
21	241
22	251
23	587
24	613
25	617
26	641
27	653
28	659
29	661
30	719
31	727
32	733
33	761
34	769
35	829
36	953
37	967
38	971
39	1009
40	1021
41	1039
42	1069
43	1087
44	1193
45	1201
46	1213
47	1697
48	1721
49	1753
50	1759
51	1777
52	1783
53	1787

[2, 13, 41, 61, 67, 79, 109, 131, 137, 173, 179, 181, 191, 193, 211, 223, 227, 229, 233, 239, 241, 251, 587, 613, 617, 641, 653, 659, 661, 719, 727, 733, 761, 769, 829, 953, 967, 971, 1009, 1021, 1039, 1069, 1087, 1193, 1201, 1213, 1697, 1721, 1753, 1759, 1777, 1783, 1787]

cp's OEIS Frontend

A361071 Let c1(p) be the number of primes <= p with an odd number of 1's in base 2, and let c2(p) be the number of primes <= p with an even number of 1's in base 2. a(n) is the least prime p such that abs(c1(p) - c2(p)) >= n.

Table of values

List of values