A286572 - cp's OEIS frontend

A286572 Compound filter (2-adic valuation of phi(n) & sigma(n)): a(n) = P(A053574(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

n	a(n)
1	0
2	1
3	7
4	22
5	23
6	67
7	29
8	122
9	79
10	173
11	67
12	408
13	107
14	277
15	328
16	531
17	214
18	742
19	191
20	949
21	530
22	631
23	277
24	1894
25	498
26	905
27	781
28	1598
29	467
30	2704
31	497
32	2149
33	1178
34	1600
35	1228
36	4188
37	743
38	1771
39	1656
40	4282
41	949
42	4658
43	947
44	3572
45	3163
46	2557
47	1129
48	8005
49	1597
50	4373
51	2855
52	4953
53	1487
54	7141
55	2704
56	7384
57	3242
58	4097
59	1771
60	14539
61	1955
62	4561
63	5462
64	8520
65	3745

[0, 1, 7, 22, 23, 67, 29, 122, 79, 173, 67, 408, 107, 277, 328, 531, 214, 742, 191, 949, 530, 631, 277, 1894, 498, 905, 781, 1598, 467, 2704, 497, 2149, 1178, 1600, 1228, 4188, 743, 1771, 1656, 4282, 949, 4658, 947, 3572, 3163, 2557, 1129, 8005, 1597, 4373, 2855, 4953, 1487, 7141, 2704, 7384, 3242, 4097, 1771, 14539, 1955, 4561, 5462, 8520, 3745]

cp's OEIS Frontend

A286572 Compound filter (2-adic valuation of phi(n) & sigma(n)): a(n) = P(A053574(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

Table of values

List of values