A231387 - cp's OEIS frontend

A231387 a(n) is a prime number that cannot be the center term of a length 3 arithmetic progression prime group with a common difference whose number of runs in binary expansion is 2.

n	a(n)
1	2
2	3
3	199
4	1319
5	2371
6	2437
7	3253
8	6871
9	6991
10	7937
11	7951
12	9041
13	9973
14	10631
15	11941
16	12379
17	12671
18	13009
19	13147
20	13187
21	13267
22	13799
23	13859
24	14479
25	16889
26	17519
27	20051
28	21089
29	26003
30	27281
31	27529
32	29581
33	31477
34	32009
35	34439
36	38561
37	41611
38	42719
39	43543
40	44839

[2, 3, 199, 1319, 2371, 2437, 3253, 6871, 6991, 7937, 7951, 9041, 9973, 10631, 11941, 12379, 12671, 13009, 13147, 13187, 13267, 13799, 13859, 14479, 16889, 17519, 20051, 21089, 26003, 27281, 27529, 29581, 31477, 32009, 34439, 38561, 41611, 42719, 43543, 44839]

cp's OEIS Frontend

A231387 a(n) is a prime number that cannot be the center term of a length 3 arithmetic progression prime group with a common difference whose number of runs in binary expansion is 2.

Table of values

List of values