A291758 - cp's OEIS frontend

A291758 Compound filter (prime signature of n & sum of squarefree divisors of n): a(n) = P(A046523(n), A048250(n)), where P(n,k) is sequence A000027 used as a pairing function.

n	a(n)
1	1
2	8
3	12
4	19
5	23
6	142
7	38
8	53
9	25
10	259
11	80
12	265
13	107
14	412
15	412
16	169
17	173
18	265
19	212
20	418
21	672
22	826
23	302
24	619
25	40
26	1087
27	63
28	607
29	467
30	5080
31	530
32	593
33	1384
34	1717
35	1384
36	1117
37	743
38	2086
39	1836
40	844
41	905
42	7780
43	992
44	1093
45	607
46	2932
47	1178
48	1759
49	59
50	418
51	2932
52	1390
53	1487
54	619
55	2932
56	1105
57	3576
58	4471
59	1832
60	8575
61	1955
62	5056
63	915
64	2209
65	3922
66	14908
67	2348
68	2092
69	5056

[1, 8, 12, 19, 23, 142, 38, 53, 25, 259, 80, 265, 107, 412, 412, 169, 173, 265, 212, 418, 672, 826, 302, 619, 40, 1087, 63, 607, 467, 5080, 530, 593, 1384, 1717, 1384, 1117, 743, 2086, 1836, 844, 905, 7780, 992, 1093, 607, 2932, 1178, 1759, 59, 418, 2932, 1390, 1487, 619, 2932, 1105, 3576, 4471, 1832, 8575, 1955, 5056, 915, 2209, 3922, 14908, 2348, 2092, 5056]

cp's OEIS Frontend

A291758 Compound filter (prime signature of n & sum of squarefree divisors of n): a(n) = P(A046523(n), A048250(n)), where P(n,k) is sequence A000027 used as a pairing function.

Table of values

List of values