A229487 - cp's OEIS frontend

A229487 Conjectured greatest number that converges to prime(n) under the iteration x -> phi(x) + 1, where phi is Euler's totient function.

n	a(n)
1	2
2	6
3	12
4	30
5	22
6	138
7	60
8	54
9	46
10	58
11	62
12	174
13	498
14	510
15	94
16	106
17	118
18	4314
19	134
20	142
21	1038
22	158
23	166
24	276
25	420
26	250
27	206
28	214
29	750
30	1758
31	254
32	262
33	274
34	278
35	298
36	302
37	1182
38	486
39	334
40	346
41	358
42	6360
43	382
44	1614
45	394
46	398
47	422
48	446
49	454
50	458
51	5898
52	478
53	54582

[2, 6, 12, 30, 22, 138, 60, 54, 46, 58, 62, 174, 498, 510, 94, 106, 118, 4314, 134, 142, 1038, 158, 166, 276, 420, 250, 206, 214, 750, 1758, 254, 262, 274, 278, 298, 302, 1182, 486, 334, 346, 358, 6360, 382, 1614, 394, 398, 422, 446, 454, 458, 5898, 478, 54582]

cp's OEIS Frontend

A229487 Conjectured greatest number that converges to prime(n) under the iteration x -> phi(x) + 1, where phi is Euler's totient function.

Table of values

List of values