A354093 - cp's OEIS frontend

A354093 a(n) = sigma(A354091(n)), where A354091 is fully multiplicative prime shift which replaces the primes of the form 3k+2 by the next larger such prime, while other primes stay as they are, and sigma is the sum of divisors function.

n	a(n)
1	1
2	6
3	4
4	31
5	12
6	24
7	8
8	156
9	13
10	72
11	18
12	124
13	14
14	48
15	48
16	781
17	24
18	78
19	20
20	372
21	32
22	108
23	30
24	624
25	133
26	84
27	40
28	248
29	42
30	288
31	32
32	3906
33	72
34	144
35	96
36	403
37	38
38	120
39	56
40	1872
41	48
42	192
43	44
44	558
45	156
46	180
47	54
48	3124
49	57
50	798
51	96
52	434
53	60
54	240
55	216
56	1248
57	80
58	252
59	72
60	1488
61	62
62	192
63	104
64	19531
65	168
66	432
67	68
68	744
69	120
70	576

[1, 6, 4, 31, 12, 24, 8, 156, 13, 72, 18, 124, 14, 48, 48, 781, 24, 78, 20, 372, 32, 108, 30, 624, 133, 84, 40, 248, 42, 288, 32, 3906, 72, 144, 96, 403, 38, 120, 56, 1872, 48, 192, 44, 558, 156, 180, 54, 3124, 57, 798, 96, 434, 60, 240, 216, 1248, 80, 252, 72, 1488, 62, 192, 104, 19531, 168, 432, 68, 744, 120, 576]

cp's OEIS Frontend

A354093 a(n) = sigma(A354091(n)), where A354091 is fully multiplicative prime shift which replaces the primes of the form 3k+2 by the next larger such prime, while other primes stay as they are, and sigma is the sum of divisors function.

Table of values

List of values