A328385 - cp's OEIS frontend

A328385 If n is of the form p^p, a(n) = n, otherwise a(n) is the first number found by iterating the map x -> A003415(x) that is different from n and either a prime, or whose degree (A051903) differs from the degree of n.

n	a(n)
1	0
2	1
3	1
4	4
5	1
6	5
7	1
8	12
9	6
10	7
11	1
12	16
13	1
14	9
15	8
16	32
17	1
18	21
19	1
20	24
21	7
22	13
23	1
24	44
25	10
26	8
27	27
28	32
29	1
30	31
31	1
32	80
33	9
34	19
35	12
36	96
37	1
38	7
39	16
40	68
41	1
42	41
43	1
44	48
45	39
46	25
47	1
48	608
49	14
50	39
51	20
52	56
53	1
54	81
55	16
56	92
57	13
58	31
59	1
60	96
61	1
62	9
63	51
64	640
65	18
66	61
67	1
68	72
69	8
70	59
71	1
72	156
73	1
74	16
75	55
76	80
77	18
78	71
79	1
80	3424
81	108
82	43
83	1
84	128
85	13
86	45
87	32
88	140
89	1
90	123
91	20
92	96
93	19

[0, 1, 1, 4, 1, 5, 1, 12, 6, 7, 1, 16, 1, 9, 8, 32, 1, 21, 1, 24, 7, 13, 1, 44, 10, 8, 27, 32, 1, 31, 1, 80, 9, 19, 12, 96, 1, 7, 16, 68, 1, 41, 1, 48, 39, 25, 1, 608, 14, 39, 20, 56, 1, 81, 16, 92, 13, 31, 1, 96, 1, 9, 51, 640, 18, 61, 1, 72, 8, 59, 1, 156, 1, 16, 55, 80, 18, 71, 1, 3424, 108, 43, 1, 128, 13, 45, 32, 140, 1, 123, 20, 96, 19]

cp's OEIS Frontend

A328385 If n is of the form p^p, a(n) = n, otherwise a(n) is the first number found by iterating the map x -> A003415(x) that is different from n and either a prime, or whose degree (A051903) differs from the degree of n.

Table of values

List of values