A276305 - cp's OEIS frontend

A276305 Primes p such that d(p*(2p+1)) = 12 where d(n) is the number of divisors of n (A000005).

n	a(n)
1	31
2	37
3	73
4	103
5	137
6	139
7	181
8	193
9	211
10	269
11	373
12	433
13	463
14	541
15	563
16	571
17	587
18	733
19	751
20	859
21	887
22	929
23	1021
24	1129
25	1151
26	1381
27	1399
28	1489
29	1637
30	1723
31	1993
32	2053
33	2083
34	2087
35	2237
36	2521
37	2621
38	2731
39	2837
40	2843
41	2909
42	3109
43	3137
44	3209
45	3271
46	3313
47	3323
48	3343
49	3541
50	4091

[31, 37, 73, 103, 137, 139, 181, 193, 211, 269, 373, 433, 463, 541, 563, 571, 587, 733, 751, 859, 887, 929, 1021, 1129, 1151, 1381, 1399, 1489, 1637, 1723, 1993, 2053, 2083, 2087, 2237, 2521, 2621, 2731, 2837, 2843, 2909, 3109, 3137, 3209, 3271, 3313, 3323, 3343, 3541, 4091]

cp's OEIS Frontend

A276305 Primes p such that d(p*(2p+1)) = 12 where d(n) is the number of divisors of n (A000005).

Table of values

List of values