A059447 - cp's OEIS frontend

A059447 Smallest number that takes n steps to get to 1 under the map f(n)=sigma(n)-n, the sum of the proper divisors.

n	a(n)
0	1
1	2
2	4
3	9
4	14
5	16
6	12
7	34
8	52
9	90
10	60
11	66
12	54
13	42
14	30
15	126
16	114
17	102
18	624
19	760
20	680
21	580
22	540
23	748
24	740
25	520
26	672
27	408
28	666
29	360
30	264
31	546
32	510
33	330
34	318
35	2960
36	2574
37	1782
38	1494
39	3672
40	3114
41	2790
42	1680
43	1386
44	1374
45	930
46	612
47	594
48	582
49	378
50	366
51	180
52	3570

[1, 2, 4, 9, 14, 16, 12, 34, 52, 90, 60, 66, 54, 42, 30, 126, 114, 102, 624, 760, 680, 580, 540, 748, 740, 520, 672, 408, 666, 360, 264, 546, 510, 330, 318, 2960, 2574, 1782, 1494, 3672, 3114, 2790, 1680, 1386, 1374, 930, 612, 594, 582, 378, 366, 180, 3570]

cp's OEIS Frontend

A059447 Smallest number that takes n steps to get to 1 under the map f(n)=sigma(n)-n, the sum of the proper divisors.

Table of values

List of values