A326042 - cp's OEIS frontend

A326042 a(n) = A064989(sigma(A003961(n))), where A003961 shifts the prime factorization of n one step towards larger primes, and A064989 shifts it back towards smaller primes.

n	a(n)
1	1
2	1
3	2
4	11
5	1
6	2
7	2
8	3
9	29
10	1
11	5
12	22
13	4
14	2
15	2
16	49
17	3
18	29
19	2
20	11
21	4
22	5
23	6
24	6
25	34
26	4
27	22
28	22
29	1
30	2
31	17
32	55
33	10
34	3
35	2
36	319
37	10
38	2
39	8
40	3
41	7
42	4
43	2
44	55
45	29
46	6
47	8
48	98
49	85
50	34
51	6
52	44
53	6
54	22
55	5
56	6
57	4
58	1
59	29
60	22
61	13
62	17
63	58
64	1091
65	4
66	10
67	4
68	33
69	12
70	2
71	31
72	87
73	3
74	10
75	68
76	22
77	10
78	8
79	10
80	49
81	469
82	7
83	12
84	44
85	3
86	2
87	2
88	15
89	25
90	29
91	8
92	66
93	34
94	8

[1, 1, 2, 11, 1, 2, 2, 3, 29, 1, 5, 22, 4, 2, 2, 49, 3, 29, 2, 11, 4, 5, 6, 6, 34, 4, 22, 22, 1, 2, 17, 55, 10, 3, 2, 319, 10, 2, 8, 3, 7, 4, 2, 55, 29, 6, 8, 98, 85, 34, 6, 44, 6, 22, 5, 6, 4, 1, 29, 22, 13, 17, 58, 1091, 4, 10, 4, 33, 12, 2, 31, 87, 3, 10, 68, 22, 10, 8, 10, 49, 469, 7, 12, 44, 3, 2, 2, 15, 25, 29, 8, 66, 34, 8]

cp's OEIS Frontend

A326042 a(n) = A064989(sigma(A003961(n))), where A003961 shifts the prime factorization of n one step towards larger primes, and A064989 shifts it back towards smaller primes.

Table of values

List of values