A331380 - cp's OEIS frontend

A331380 Numbers whose sum of prime factors is divisible by their sum of prime indices.

n	a(n)
1	2
2	4
3	8
4	16
5	32
6	33
7	39
8	55
9	64
10	65
11	66
12	74
13	77
14	78
15	86
16	91
17	110
18	128
19	130
20	132
21	154
22	156
23	164
24	182
25	188
26	220
27	256
28	260
29	264
30	308
31	312
32	364
33	371
34	411
35	440
36	459
37	512
38	513
39	520
40	528
41	530
42	616
43	624
44	636
45	689
46	728
47	746
48	755
49	765
50	766
51	855
52	880
53	906
54	915
55	918
56	1007

[2, 4, 8, 16, 32, 33, 39, 55, 64, 65, 66, 74, 77, 78, 86, 91, 110, 128, 130, 132, 154, 156, 164, 182, 188, 220, 256, 260, 264, 308, 312, 364, 371, 411, 440, 459, 512, 513, 520, 528, 530, 616, 624, 636, 689, 728, 746, 755, 765, 766, 855, 880, 906, 915, 918, 1007]

cp's OEIS Frontend

A331380 Numbers whose sum of prime factors is divisible by their sum of prime indices.

Table of values

List of values