A369670 - cp's OEIS frontend

A369670 Integers k such that k, k + 1 and 2 k + 1 all have the same number of prime factors, counted with multiplicity.

n	a(n)
1	2
2	25
3	34
4	38
5	57
6	93
7	118
8	133
9	145
10	171
11	177
12	201
13	205
14	213
15	218
16	298
17	332
18	334
19	361
20	381
21	387
22	394
23	446
24	501
25	507
26	604
27	633
28	694
29	698
30	710
31	805
32	842
33	865
34	878
35	898
36	902
37	921
38	1004
39	1075
40	1084
41	1105
42	1114
43	1130
44	1141
45	1172
46	1182
47	1226
48	1285
49	1293
50	1358
51	1412
52	1445
53	1465
54	1513
55	1557
56	1587
57	1592

[2, 25, 34, 38, 57, 93, 118, 133, 145, 171, 177, 201, 205, 213, 218, 298, 332, 334, 361, 381, 387, 394, 446, 501, 507, 604, 633, 694, 698, 710, 805, 842, 865, 878, 898, 902, 921, 1004, 1075, 1084, 1105, 1114, 1130, 1141, 1172, 1182, 1226, 1285, 1293, 1358, 1412, 1445, 1465, 1513, 1557, 1587, 1592]

cp's OEIS Frontend

A369670 Integers k such that k, k + 1 and 2 k + 1 all have the same number of prime factors, counted with multiplicity.

Table of values

List of values