A285763 - cp's OEIS frontend

A285763 a(n) = a(a(n - 2)) + a(n - a(n - 2)), with a(1) = 1, a(2) = a(3) = a(4) = 2, a(5) = 3.

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

[1, 2, 2, 2, 3, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 14, 14, 15, 16, 16, 16, 16, 16, 16, 16, 17, 18, 19, 20, 21, 22, 23, 24, 24, 24, 25, 26, 27, 28, 28, 28, 29, 30, 30, 30, 30, 30, 31, 32, 32, 32, 32, 32, 32, 32, 32, 32]

cp's OEIS Frontend

A285763 a(n) = a(a(n - 2)) + a(n - a(n - 2)), with a(1) = 1, a(2) = a(3) = a(4) = 2, a(5) = 3.

Table of values

List of values

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

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

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