A067317 - cp's OEIS frontend

A067317 Numbers k such that 1 + binomial(k,j) is prime for only 2 values of j (0 <= j <= k).

n	a(n)
1	1
2	3
3	7
4	15
5	23
6	31
7	59
8	63
9	67
10	81
11	84
12	93
13	95
14	127
15	157
16	170
17	214
18	239
19	253
20	255
21	313
22	470
23	511
24	622
25	694
26	1010
27	1023
28	1098
29	1691
30	2047
31	3535
32	3836
33	3963
34	4095
35	6143
36	7166
37	8191
38	11757
39	12525
40	12686
41	16383
42	32767

[1, 3, 7, 15, 23, 31, 59, 63, 67, 81, 84, 93, 95, 127, 157, 170, 214, 239, 253, 255, 313, 470, 511, 622, 694, 1010, 1023, 1098, 1691, 2047, 3535, 3836, 3963, 4095, 6143, 7166, 8191, 11757, 12525, 12686, 16383, 32767]

cp's OEIS Frontend

A067317 Numbers k such that 1 + binomial(k,j) is prime for only 2 values of j (0 <= j <= k).

Table of values

List of values