A286568 - cp's OEIS frontend

A286568 Compound filter (phi(n) & 2-adic valuation of sigma(n)): a(n) = P(A000010(n), A286357(n)), where P(n,k) is sequence A000027 used as a pairing function.

n	a(n)
1	1
2	1
3	8
4	3
5	14
6	8
7	42
8	10
9	21
10	14
11	76
12	19
13	90
14	42
15	63
16	36
17	152
18	21
19	208
20	44
21	148
22	76
23	322
24	53
25	210
26	90
27	228
28	117
29	434
30	63
31	625
32	136
33	296
34	152
35	402
36	78
37	702
38	208
39	375
40	152
41	860
42	148
43	988
44	251
45	324
46	322
47	1271
48	169
49	903
50	210
51	627
52	324
53	1430
54	228
55	943
56	375
57	816
58	434
59	1828
60	187
61	1890
62	625
63	777
64	528
65	1273
66	296
67	2344
68	560
69	1220
70	402
71	2698
72	300
73	2700
74	702
75	901

[1, 1, 8, 3, 14, 8, 42, 10, 21, 14, 76, 19, 90, 42, 63, 36, 152, 21, 208, 44, 148, 76, 322, 53, 210, 90, 228, 117, 434, 63, 625, 136, 296, 152, 402, 78, 702, 208, 375, 152, 860, 148, 988, 251, 324, 322, 1271, 169, 903, 210, 627, 324, 1430, 228, 943, 375, 816, 434, 1828, 187, 1890, 625, 777, 528, 1273, 296, 2344, 560, 1220, 402, 2698, 300, 2700, 702, 901]

cp's OEIS Frontend

A286568 Compound filter (phi(n) & 2-adic valuation of sigma(n)): a(n) = P(A000010(n), A286357(n)), where P(n,k) is sequence A000027 used as a pairing function.

Table of values

List of values