A061641 - cp's OEIS frontend

A061641 Pure numbers in the Collatz (3x+1) iteration. Also called pure hailstone numbers.

n	a(n)
1	0
2	1
3	3
4	6
5	7
6	9
7	12
8	15
9	18
10	19
11	21
12	24
13	25
14	27
15	30
16	33
17	36
18	37
19	39
20	42
21	43
22	45
23	48
24	51
25	54
26	55
27	57
28	60
29	63
30	66
31	69
32	72
33	73
34	75
35	78
36	79
37	81
38	84
39	87
40	90
41	93
42	96
43	97
44	99
45	102
46	105
47	108
48	109
49	111
50	114
51	115
52	117
53	120
54	123
55	126
56	127
57	129
58	132
59	133
60	135
61	138
62	141
63	144
64	145

[0, 1, 3, 6, 7, 9, 12, 15, 18, 19, 21, 24, 25, 27, 30, 33, 36, 37, 39, 42, 43, 45, 48, 51, 54, 55, 57, 60, 63, 66, 69, 72, 73, 75, 78, 79, 81, 84, 87, 90, 93, 96, 97, 99, 102, 105, 108, 109, 111, 114, 115, 117, 120, 123, 126, 127, 129, 132, 133, 135, 138, 141, 144, 145]

cp's OEIS Frontend

A061641 Pure numbers in the Collatz (3x+1) iteration. Also called pure hailstone numbers.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	6
5	7
6	9
7	12
8	15
9	18
10	19
11	21
12	24
13	25
14	27
15	30
16	33
17	36
18	37
19	39
20	42
21	43
22	45
23	48
24	51
25	54
26	55
27	57
28	60
29	63
30	66
31	69
32	72
33	73
34	75
35	78
36	79
37	81
38	84
39	87
40	90
41	93
42	96
43	97
44	99
45	102
46	105
47	108
48	109
49	111
50	114
51	115
52	117
53	120
54	123
55	126
56	127
57	129
58	132
59	133
60	135
61	138
62	141
63	144
64	145

n	a(n)
1	0
2	1
3	3
4	6
5	7
6	9
7	12
8	15
9	18
10	19
11	21
12	24
13	25
14	27
15	30
16	33
17	36
18	37
19	39
20	42
21	43
22	45
23	48
24	51
25	54
26	55
27	57
28	60
29	63
30	66
31	69
32	72
33	73
34	75
35	78
36	79
37	81
38	84
39	87
40	90
41	93
42	96
43	97
44	99
45	102
46	105
47	108
48	109
49	111
50	114
51	115
52	117
53	120
54	123
55	126
56	127
57	129
58	132
59	133
60	135
61	138
62	141
63	144
64	145

n	a(n)
1	0
2	1
3	3
4	6
5	7
6	9
7	12
8	15
9	18
10	19
11	21
12	24
13	25
14	27
15	30
16	33
17	36
18	37
19	39
20	42
21	43
22	45
23	48
24	51
25	54
26	55
27	57
28	60
29	63
30	66
31	69
32	72
33	73
34	75
35	78
36	79
37	81
38	84
39	87
40	90
41	93
42	96
43	97
44	99
45	102
46	105
47	108
48	109
49	111
50	114
51	115
52	117
53	120
54	123
55	126
56	127
57	129
58	132
59	133
60	135
61	138
62	141
63	144
64	145