A161643 - cp's OEIS frontend

A161643 Sum of all numbers from the smallest up to the largest prime factor of the n-th composite.

n	a(n)
1	2
2	5
3	2
4	3
5	14
6	5
7	27
8	12
9	2
10	5
11	14
12	25
13	65
14	5
15	5
16	90
17	3
18	27
19	14
20	2
21	63
22	152
23	18
24	5
25	189
26	88
27	14
28	27
29	65
30	12
31	275
32	5
33	7
34	14
35	150
36	90
37	5
38	56
39	27
40	187
41	434
42	14
43	495
44	25
45	2
46	81
47	65
48	152
49	273
50	27
51	5
52	702
53	12
54	189
55	45
56	90
57	14
58	3
59	860
60	27
61	143
62	945
63	432
64	65
65	14
66	70
67	275
68	493
69	1127
70	180
71	5
72	27

[2, 5, 2, 3, 14, 5, 27, 12, 2, 5, 14, 25, 65, 5, 5, 90, 3, 27, 14, 2, 63, 152, 18, 5, 189, 88, 14, 27, 65, 12, 275, 5, 7, 14, 150, 90, 5, 56, 27, 187, 434, 14, 495, 25, 2, 81, 65, 152, 273, 27, 5, 702, 12, 189, 45, 90, 14, 3, 860, 27, 143, 945, 432, 65, 14, 70, 275, 493, 1127, 180, 5, 27]

cp's OEIS Frontend

A161643 Sum of all numbers from the smallest up to the largest prime factor of the n-th composite.

Table of values

List of values