A268134 - cp's OEIS frontend

A268134 If a(n) is squarefree (and n > 1), then a(n+1) = a(n) + a(n-1), else a(n+1) is the smallest positive integer not occurring earlier.

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	4
7	6
8	10
9	16
10	7
11	23
12	30
13	53
14	83
15	136
16	9
17	11
18	20
19	12
20	13
21	25
22	14
23	39
24	53
25	92
26	15
27	107
28	122
29	229
30	351
31	17
32	368
33	18
34	19
35	37
36	56
37	21
38	77
39	98
40	22
41	120
42	24
43	26
44	50
45	27
46	28
47	29
48	57
49	86
50	143
51	229
52	372
53	31
54	403
55	434
56	837
57	32
58	33
59	65
60	98
61	34
62	132
63	35
64	167
65	202
66	369
67	36
68	38
69	74
70	112
71	40
72	41
73	81
74	42
75	123
76	165

[1, 2, 3, 5, 8, 4, 6, 10, 16, 7, 23, 30, 53, 83, 136, 9, 11, 20, 12, 13, 25, 14, 39, 53, 92, 15, 107, 122, 229, 351, 17, 368, 18, 19, 37, 56, 21, 77, 98, 22, 120, 24, 26, 50, 27, 28, 29, 57, 86, 143, 229, 372, 31, 403, 434, 837, 32, 33, 65, 98, 34, 132, 35, 167, 202, 369, 36, 38, 74, 112, 40, 41, 81, 42, 123, 165]

cp's OEIS Frontend

A268134 If a(n) is squarefree (and n > 1), then a(n+1) = a(n) + a(n-1), else a(n+1) is the smallest positive integer not occurring earlier.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	4
7	6
8	10
9	16
10	7
11	23
12	30
13	53
14	83
15	136
16	9
17	11
18	20
19	12
20	13
21	25
22	14
23	39
24	53
25	92
26	15
27	107
28	122
29	229
30	351
31	17
32	368
33	18
34	19
35	37
36	56
37	21
38	77
39	98
40	22
41	120
42	24
43	26
44	50
45	27
46	28
47	29
48	57
49	86
50	143
51	229
52	372
53	31
54	403
55	434
56	837
57	32
58	33
59	65
60	98
61	34
62	132
63	35
64	167
65	202
66	369
67	36
68	38
69	74
70	112
71	40
72	41
73	81
74	42
75	123
76	165

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	4
7	6
8	10
9	16
10	7
11	23
12	30
13	53
14	83
15	136
16	9
17	11
18	20
19	12
20	13
21	25
22	14
23	39
24	53
25	92
26	15
27	107
28	122
29	229
30	351
31	17
32	368
33	18
34	19
35	37
36	56
37	21
38	77
39	98
40	22
41	120
42	24
43	26
44	50
45	27
46	28
47	29
48	57
49	86
50	143
51	229
52	372
53	31
54	403
55	434
56	837
57	32
58	33
59	65
60	98
61	34
62	132
63	35
64	167
65	202
66	369
67	36
68	38
69	74
70	112
71	40
72	41
73	81
74	42
75	123
76	165

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	4
7	6
8	10
9	16
10	7
11	23
12	30
13	53
14	83
15	136
16	9
17	11
18	20
19	12
20	13
21	25
22	14
23	39
24	53
25	92
26	15
27	107
28	122
29	229
30	351
31	17
32	368
33	18
34	19
35	37
36	56
37	21
38	77
39	98
40	22
41	120
42	24
43	26
44	50
45	27
46	28
47	29
48	57
49	86
50	143
51	229
52	372
53	31
54	403
55	434
56	837
57	32
58	33
59	65
60	98
61	34
62	132
63	35
64	167
65	202
66	369
67	36
68	38
69	74
70	112
71	40
72	41
73	81
74	42
75	123
76	165