A285759 - cp's OEIS frontend

A285759 a(n) = a(n - 1 - a(n - 1)) + a(n - 1 - a(n - 4)), with a(1) = 1, a(2) = 1, a(3) = 1, a(4) = 2.

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

[1, 1, 1, 2, 2, 3, 3, 4, 5, 5, 5, 6, 6, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 16, 17, 17, 17, 18, 18, 19, 19, 20, 20, 20, 21, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27, 27, 27, 28, 28, 29, 29, 30, 31, 31, 32, 32, 33]

cp's OEIS Frontend

A285759 a(n) = a(n - 1 - a(n - 1)) + a(n - 1 - a(n - 4)), with a(1) = 1, a(2) = 1, a(3) = 1, a(4) = 2.

Table of values

List of values

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

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

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