A309389 - cp's OEIS frontend

A309389 a(n) is the smallest positive divisor not yet in the sequence of 11*A000217(n-1); n >= 1.

n	a(n)
1	1
2	11
3	3
4	2
5	5
6	15
7	7
8	4
9	6
10	9
11	55
12	22
13	13
14	77
15	21
16	8
17	17
18	33
19	19
20	10
21	14
22	121
23	23
24	12
25	20
26	25
27	27
28	18
29	29
30	87
31	31
32	16
33	24
34	51
35	35
36	30
37	37
38	209
39	39
40	26
41	41
42	123
43	43
44	86
45	45
46	69
47	47
48	44
49	28
50	49
51	75
52	34
53	53
54	99
55	135
56	70
57	38
58	57
59	59
60	66
61	61
62	341
63	63
64	32
65	40
66	65
67	67
68	134
69	46
70	105
71	71
72	36
73	73
74	407
75	111

[1, 11, 3, 2, 5, 15, 7, 4, 6, 9, 55, 22, 13, 77, 21, 8, 17, 33, 19, 10, 14, 121, 23, 12, 20, 25, 27, 18, 29, 87, 31, 16, 24, 51, 35, 30, 37, 209, 39, 26, 41, 123, 43, 86, 45, 69, 47, 44, 28, 49, 75, 34, 53, 99, 135, 70, 38, 57, 59, 66, 61, 341, 63, 32, 40, 65, 67, 134, 46, 105, 71, 36, 73, 407, 111]

cp's OEIS Frontend

A309389 a(n) is the smallest positive divisor not yet in the sequence of 11*A000217(n-1); n >= 1.

Table of values

List of values

n	a(n)
1	1
2	11
3	3
4	2
5	5
6	15
7	7
8	4
9	6
10	9
11	55
12	22
13	13
14	77
15	21
16	8
17	17
18	33
19	19
20	10
21	14
22	121
23	23
24	12
25	20
26	25
27	27
28	18
29	29
30	87
31	31
32	16
33	24
34	51
35	35
36	30
37	37
38	209
39	39
40	26
41	41
42	123
43	43
44	86
45	45
46	69
47	47
48	44
49	28
50	49
51	75
52	34
53	53
54	99
55	135
56	70
57	38
58	57
59	59
60	66
61	61
62	341
63	63
64	32
65	40
66	65
67	67
68	134
69	46
70	105
71	71
72	36
73	73
74	407
75	111

n	a(n)
1	1
2	11
3	3
4	2
5	5
6	15
7	7
8	4
9	6
10	9
11	55
12	22
13	13
14	77
15	21
16	8
17	17
18	33
19	19
20	10
21	14
22	121
23	23
24	12
25	20
26	25
27	27
28	18
29	29
30	87
31	31
32	16
33	24
34	51
35	35
36	30
37	37
38	209
39	39
40	26
41	41
42	123
43	43
44	86
45	45
46	69
47	47
48	44
49	28
50	49
51	75
52	34
53	53
54	99
55	135
56	70
57	38
58	57
59	59
60	66
61	61
62	341
63	63
64	32
65	40
66	65
67	67
68	134
69	46
70	105
71	71
72	36
73	73
74	407
75	111

n	a(n)
1	1
2	11
3	3
4	2
5	5
6	15
7	7
8	4
9	6
10	9
11	55
12	22
13	13
14	77
15	21
16	8
17	17
18	33
19	19
20	10
21	14
22	121
23	23
24	12
25	20
26	25
27	27
28	18
29	29
30	87
31	31
32	16
33	24
34	51
35	35
36	30
37	37
38	209
39	39
40	26
41	41
42	123
43	43
44	86
45	45
46	69
47	47
48	44
49	28
50	49
51	75
52	34
53	53
54	99
55	135
56	70
57	38
58	57
59	59
60	66
61	61
62	341
63	63
64	32
65	40
66	65
67	67
68	134
69	46
70	105
71	71
72	36
73	73
74	407
75	111