A158976 - cp's OEIS frontend

A158976 a(n) = sum of numbers k <= n such that not all proper divisors of k are divisors of n.

n	a(n)
1	0
2	0
3	0
4	0
5	4
6	0
7	10
8	6
9	18
10	23
11	37
12	10
13	49
14	45
15	54
16	66
17	94
18	75
19	112
20	90
21	123
22	149
23	175
24	120
25	199
26	220
27	241
28	251
29	305
30	236
31	335
32	307
33	358
34	396
35	409
36	385
37	505
38	501
39	534
40	499
41	622
42	568
43	664
44	630
45	632
46	749
47	799
48	688
49	847
50	857
51	937
52	959
53	1049
54	985
55	1078
56	1039
57	1205

[0, 0, 0, 0, 4, 0, 10, 6, 18, 23, 37, 10, 49, 45, 54, 66, 94, 75, 112, 90, 123, 149, 175, 120, 199, 220, 241, 251, 305, 236, 335, 307, 358, 396, 409, 385, 505, 501, 534, 499, 622, 568, 664, 630, 632, 749, 799, 688, 847, 857, 937, 959, 1049, 985, 1078, 1039, 1205]

cp's OEIS Frontend

A158976 a(n) = sum of numbers k <= n such that not all proper divisors of k are divisors of n.

Table of values

List of values