A260439 - cp's OEIS frontend

A260439 Column index to A255551: a(1) = 0; for n > 1: if n is Lucky number then a(n) = 1, otherwise for a(2k) = k, and for odd unlucky numbers, a(n) = 1 + the position at the stage where n is removed in the Lucky sieve.

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	3
12	6
13	1
14	7
15	1
16	8
17	4
18	9
19	2
20	10
21	1
22	11
23	5
24	12
25	1
26	13
27	2
28	14
29	6
30	15
31	1
32	16
33	1
34	17
35	7
36	18
37	1
38	19
39	3
40	20
41	8
42	21
43	1
44	22
45	2
46	23
47	9
48	24
49	1
50	25
51	1
52	26
53	10
54	27
55	2
56	28
57	3
58	29
59	11
60	30
61	4
62	31
63	1
64	32
65	12
66	33
67	1
68	34
69	1
70	35
71	13
72	36
73	1
74	37
75	1
76	38
77	14
78	39
79	1
80	40
81	5
82	41
83	15
84	42
85	2
86	43
87	1
88	44
89	16
90	45
91	4
92	46
93	1
94	47
95	17
96	48
97	3
98	49
99	1
100	50
101	18
102	51
103	6
104	52
105	1

[0, 1, 1, 2, 2, 3, 1, 4, 1, 5, 3, 6, 1, 7, 1, 8, 4, 9, 2, 10, 1, 11, 5, 12, 1, 13, 2, 14, 6, 15, 1, 16, 1, 17, 7, 18, 1, 19, 3, 20, 8, 21, 1, 22, 2, 23, 9, 24, 1, 25, 1, 26, 10, 27, 2, 28, 3, 29, 11, 30, 4, 31, 1, 32, 12, 33, 1, 34, 1, 35, 13, 36, 1, 37, 1, 38, 14, 39, 1, 40, 5, 41, 15, 42, 2, 43, 1, 44, 16, 45, 4, 46, 1, 47, 17, 48, 3, 49, 1, 50, 18, 51, 6, 52, 1]

cp's OEIS Frontend

A260439 Column index to A255551: a(1) = 0; for n > 1: if n is Lucky number then a(n) = 1, otherwise for a(2k) = k, and for odd unlucky numbers, a(n) = 1 + the position at the stage where n is removed in the Lucky sieve.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	3
12	6
13	1
14	7
15	1
16	8
17	4
18	9
19	2
20	10
21	1
22	11
23	5
24	12
25	1
26	13
27	2
28	14
29	6
30	15
31	1
32	16
33	1
34	17
35	7
36	18
37	1
38	19
39	3
40	20
41	8
42	21
43	1
44	22
45	2
46	23
47	9
48	24
49	1
50	25
51	1
52	26
53	10
54	27
55	2
56	28
57	3
58	29
59	11
60	30
61	4
62	31
63	1
64	32
65	12
66	33
67	1
68	34
69	1
70	35
71	13
72	36
73	1
74	37
75	1
76	38
77	14
78	39
79	1
80	40
81	5
82	41
83	15
84	42
85	2
86	43
87	1
88	44
89	16
90	45
91	4
92	46
93	1
94	47
95	17
96	48
97	3
98	49
99	1
100	50
101	18
102	51
103	6
104	52
105	1

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	3
12	6
13	1
14	7
15	1
16	8
17	4
18	9
19	2
20	10
21	1
22	11
23	5
24	12
25	1
26	13
27	2
28	14
29	6
30	15
31	1
32	16
33	1
34	17
35	7
36	18
37	1
38	19
39	3
40	20
41	8
42	21
43	1
44	22
45	2
46	23
47	9
48	24
49	1
50	25
51	1
52	26
53	10
54	27
55	2
56	28
57	3
58	29
59	11
60	30
61	4
62	31
63	1
64	32
65	12
66	33
67	1
68	34
69	1
70	35
71	13
72	36
73	1
74	37
75	1
76	38
77	14
78	39
79	1
80	40
81	5
82	41
83	15
84	42
85	2
86	43
87	1
88	44
89	16
90	45
91	4
92	46
93	1
94	47
95	17
96	48
97	3
98	49
99	1
100	50
101	18
102	51
103	6
104	52
105	1

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	3
12	6
13	1
14	7
15	1
16	8
17	4
18	9
19	2
20	10
21	1
22	11
23	5
24	12
25	1
26	13
27	2
28	14
29	6
30	15
31	1
32	16
33	1
34	17
35	7
36	18
37	1
38	19
39	3
40	20
41	8
42	21
43	1
44	22
45	2
46	23
47	9
48	24
49	1
50	25
51	1
52	26
53	10
54	27
55	2
56	28
57	3
58	29
59	11
60	30
61	4
62	31
63	1
64	32
65	12
66	33
67	1
68	34
69	1
70	35
71	13
72	36
73	1
74	37
75	1
76	38
77	14
78	39
79	1
80	40
81	5
82	41
83	15
84	42
85	2
86	43
87	1
88	44
89	16
90	45
91	4
92	46
93	1
94	47
95	17
96	48
97	3
98	49
99	1
100	50
101	18
102	51
103	6
104	52
105	1