A005229 - cp's OEIS frontend

A005229 a(1) = a(2) = 1; for n > 2, a(n) = a(a(n-2)) + a(n - a(n-2)).

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

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

cp's OEIS Frontend

A005229 a(1) = a(2) = 1; for n > 2, a(n) = a(a(n-2)) + a(n - a(n-2)).

Table of values

List of values

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

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

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