A175127 - cp's OEIS frontend

A175127 a(n) = the largest numbers m with the number of steps n of iterations of {r - (smallest prime divisor of r)} needed to reach 0 starting at r = m .

n	a(n)
2	4
3	6
4	9
5	10
6	12
7	15
8	16
9	18
10	21
11	25
12	24
13	27
14	28
15	30
16	35
17	34
18	36
19	39
20	40
21	42
22	49
23	46
24	48
25	51
26	55
27	54
28	57
29	58
30	60
31	65
32	64
33	66
34	69
35	70
36	77
37	75
38	76
39	78
40	81
41	85
42	84
43	91
44	88
45	90
46	95
47	94
48	96
49	99
50	100
51	102
52	105
53	106
54	108
55	111
56	121
57	119
58	117
59	118
60	120
61	125
62	124
63	126
64	133
65	130
66	132

[4, 6, 9, 10, 12, 15, 16, 18, 21, 25, 24, 27, 28, 30, 35, 34, 36, 39, 40, 42, 49, 46, 48, 51, 55, 54, 57, 58, 60, 65, 64, 66, 69, 70, 77, 75, 76, 78, 81, 85, 84, 91, 88, 90, 95, 94, 96, 99, 100, 102, 105, 106, 108, 111, 121, 119, 117, 118, 120, 125, 124, 126, 133, 130, 132]

cp's OEIS Frontend

A175127 a(n) = the largest numbers m with the number of steps n of iterations of {r - (smallest prime divisor of r)} needed to reach 0 starting at r = m .

Table of values

List of values

n	a(n)
2	4
3	6
4	9
5	10
6	12
7	15
8	16
9	18
10	21
11	25
12	24
13	27
14	28
15	30
16	35
17	34
18	36
19	39
20	40
21	42
22	49
23	46
24	48
25	51
26	55
27	54
28	57
29	58
30	60
31	65
32	64
33	66
34	69
35	70
36	77
37	75
38	76
39	78
40	81
41	85
42	84
43	91
44	88
45	90
46	95
47	94
48	96
49	99
50	100
51	102
52	105
53	106
54	108
55	111
56	121
57	119
58	117
59	118
60	120
61	125
62	124
63	126
64	133
65	130
66	132

n	a(n)
2	4
3	6
4	9
5	10
6	12
7	15
8	16
9	18
10	21
11	25
12	24
13	27
14	28
15	30
16	35
17	34
18	36
19	39
20	40
21	42
22	49
23	46
24	48
25	51
26	55
27	54
28	57
29	58
30	60
31	65
32	64
33	66
34	69
35	70
36	77
37	75
38	76
39	78
40	81
41	85
42	84
43	91
44	88
45	90
46	95
47	94
48	96
49	99
50	100
51	102
52	105
53	106
54	108
55	111
56	121
57	119
58	117
59	118
60	120
61	125
62	124
63	126
64	133
65	130
66	132

n	a(n)
2	4
3	6
4	9
5	10
6	12
7	15
8	16
9	18
10	21
11	25
12	24
13	27
14	28
15	30
16	35
17	34
18	36
19	39
20	40
21	42
22	49
23	46
24	48
25	51
26	55
27	54
28	57
29	58
30	60
31	65
32	64
33	66
34	69
35	70
36	77
37	75
38	76
39	78
40	81
41	85
42	84
43	91
44	88
45	90
46	95
47	94
48	96
49	99
50	100
51	102
52	105
53	106
54	108
55	111
56	121
57	119
58	117
59	118
60	120
61	125
62	124
63	126
64	133
65	130
66	132