A351329 - cp's OEIS frontend

A351329 A fractal-like sequence: erase all triples of adjacent terms that have an even sum; the remaining terms rebuild the starting sequence.

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

[1, 2, 3, 4, 6, 8, 1, 2, 10, 5, 7, 3, 9, 11, 12, 4, 13, 14, 15, 6, 8, 1, 2, 10, 5, 16, 18, 20, 7, 22, 24, 26, 3, 28, 30, 32, 9, 34, 36, 38, 11, 12, 4, 13, 14, 40, 17, 19, 15, 21, 23, 42, 6, 25, 44, 27, 8, 46, 29, 31, 1, 33, 35, 48, 2, 37, 50, 39, 10, 52, 41, 43, 5, 45, 47, 54, 16, 49, 56, 51, 18, 20, 7, 22]

cp's OEIS Frontend

A351329 A fractal-like sequence: erase all triples of adjacent terms that have an even sum; the remaining terms rebuild the starting sequence.

Table of values

List of values

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

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

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