A373231 - cp's OEIS frontend

A373231 Relative of Hofstadter Q-sequence: a(n) = 0 for n <= 0, a(n) = n for 1 <= n <= 11; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 11.

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

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 6, 12, 13, 14, 9, 15, 16, 17, 12, 18, 19, 20, 15, 21, 22, 17, 24, 18, 24, 26, 27, 22, 21, 33, 30, 20, 29, 36, 27, 24, 36, 33, 31, 28, 42, 31, 33, 32, 48, 36, 25, 44, 44, 46, 22, 56, 38, 41, 40, 50, 43, 44, 43, 56, 49, 42, 45, 44, 67, 43, 47, 52]

cp's OEIS Frontend

A373231 Relative of Hofstadter Q-sequence: a(n) = 0 for n <= 0, a(n) = n for 1 <= n <= 11; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 11.

Table of values

List of values

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

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

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