A303950 - cp's OEIS frontend

A303950 A fractal-like sequence: erasing all pairs of contiguous terms that sum up to a Fibonacci number leaves the sequence unchanged.

n	a(n)
1	1
2	2
3	4
4	9
5	1
6	3
7	5
8	2
9	4
10	6
11	7
12	9
13	1
14	3
15	8
16	13
17	5
18	2
19	4
20	6
21	10
22	11
23	7
24	9
25	1
26	3
27	8
28	12
29	22
30	13
31	5
32	2
33	4
34	6
35	10
36	14
37	20
38	11
39	7
40	9
41	1
42	3
43	8
44	12
45	15
46	19
47	22
48	13
49	5
50	2
51	4
52	6
53	10
54	14
55	16
56	18
57	20
58	11
59	7
60	9
61	1
62	3
63	8
64	12
65	15
66	17
67	38
68	19
69	22
70	13
71	5
72	2
73	4
74	6
75	10
76	14
77	16

[1, 2, 4, 9, 1, 3, 5, 2, 4, 6, 7, 9, 1, 3, 8, 13, 5, 2, 4, 6, 10, 11, 7, 9, 1, 3, 8, 12, 22, 13, 5, 2, 4, 6, 10, 14, 20, 11, 7, 9, 1, 3, 8, 12, 15, 19, 22, 13, 5, 2, 4, 6, 10, 14, 16, 18, 20, 11, 7, 9, 1, 3, 8, 12, 15, 17, 38, 19, 22, 13, 5, 2, 4, 6, 10, 14, 16]

cp's OEIS Frontend

A303950 A fractal-like sequence: erasing all pairs of contiguous terms that sum up to a Fibonacci number leaves the sequence unchanged.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	9
5	1
6	3
7	5
8	2
9	4
10	6
11	7
12	9
13	1
14	3
15	8
16	13
17	5
18	2
19	4
20	6
21	10
22	11
23	7
24	9
25	1
26	3
27	8
28	12
29	22
30	13
31	5
32	2
33	4
34	6
35	10
36	14
37	20
38	11
39	7
40	9
41	1
42	3
43	8
44	12
45	15
46	19
47	22
48	13
49	5
50	2
51	4
52	6
53	10
54	14
55	16
56	18
57	20
58	11
59	7
60	9
61	1
62	3
63	8
64	12
65	15
66	17
67	38
68	19
69	22
70	13
71	5
72	2
73	4
74	6
75	10
76	14
77	16

n	a(n)
1	1
2	2
3	4
4	9
5	1
6	3
7	5
8	2
9	4
10	6
11	7
12	9
13	1
14	3
15	8
16	13
17	5
18	2
19	4
20	6
21	10
22	11
23	7
24	9
25	1
26	3
27	8
28	12
29	22
30	13
31	5
32	2
33	4
34	6
35	10
36	14
37	20
38	11
39	7
40	9
41	1
42	3
43	8
44	12
45	15
46	19
47	22
48	13
49	5
50	2
51	4
52	6
53	10
54	14
55	16
56	18
57	20
58	11
59	7
60	9
61	1
62	3
63	8
64	12
65	15
66	17
67	38
68	19
69	22
70	13
71	5
72	2
73	4
74	6
75	10
76	14
77	16

n	a(n)
1	1
2	2
3	4
4	9
5	1
6	3
7	5
8	2
9	4
10	6
11	7
12	9
13	1
14	3
15	8
16	13
17	5
18	2
19	4
20	6
21	10
22	11
23	7
24	9
25	1
26	3
27	8
28	12
29	22
30	13
31	5
32	2
33	4
34	6
35	10
36	14
37	20
38	11
39	7
40	9
41	1
42	3
43	8
44	12
45	15
46	19
47	22
48	13
49	5
50	2
51	4
52	6
53	10
54	14
55	16
56	18
57	20
58	11
59	7
60	9
61	1
62	3
63	8
64	12
65	15
66	17
67	38
68	19
69	22
70	13
71	5
72	2
73	4
74	6
75	10
76	14
77	16