A156080 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A156080 as a simple table

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	3
12	3
13	3
14	3
15	4
16	4
17	4
18	4
19	5
20	5
21	6
22	6
23	6
24	6
25	6
26	6
27	7
28	7
29	7
30	7
31	7
32	7
33	8
34	8
35	9
36	9
37	9
38	9
39	10
40	10
41	10
42	10
43	10
44	10
45	11
46	11
47	12
48	12
49	12
50	12
51	12
52	12
53	13
54	13
55	13
56	13
57	14
58	14
59	14
60	14
61	14
62	14
63	15
64	15
65	16
66	16
67	16
68	16
69	17
70	17
71	17
72	17
73	17
74	17
75	18
76	18
77	19
78	19
79	19
80	19
81	20
82	20

[0,0,1,1,1,1,1,1,2,2,3,3,3,3,4,4,4,4,5,5,6,6,6,6, 6,6,7,7,7,7,7,7,8,8,9,9,9,9,10,10,10,10,10,10,11, 11,12,12,12,12,12,12,13,13,13,13,14,14,14,14,14, 14,15,15,16,16,16,16,17,17,17,17,17,17,18,18,19, 19,19,19,20,20]

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	3
12	3
13	3
14	3
15	4
16	4
17	4
18	4
19	5
20	5
21	6
22	6
23	6
24	6
25	6
26	6
27	7
28	7
29	7
30	7
31	7
32	7
33	8
34	8
35	9
36	9
37	9
38	9
39	10
40	10
41	10
42	10
43	10
44	10
45	11
46	11
47	12
48	12
49	12
50	12
51	12
52	12
53	13
54	13
55	13
56	13
57	14
58	14
59	14
60	14
61	14
62	14
63	15
64	15
65	16
66	16
67	16
68	16
69	17
70	17
71	17
72	17
73	17
74	17
75	18
76	18
77	19
78	19
79	19
80	19
81	20
82	20

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	3
12	3
13	3
14	3
15	4
16	4
17	4
18	4
19	5
20	5
21	6
22	6
23	6
24	6
25	6
26	6
27	7
28	7
29	7
30	7
31	7
32	7
33	8
34	8
35	9
36	9
37	9
38	9
39	10
40	10
41	10
42	10
43	10
44	10
45	11
46	11
47	12
48	12
49	12
50	12
51	12
52	12
53	13
54	13
55	13
56	13
57	14
58	14
59	14
60	14
61	14
62	14
63	15
64	15
65	16
66	16
67	16
68	16
69	17
70	17
71	17
72	17
73	17
74	17
75	18
76	18
77	19
78	19
79	19
80	19
81	20
82	20

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	3
12	3
13	3
14	3
15	4
16	4
17	4
18	4
19	5
20	5
21	6
22	6
23	6
24	6
25	6
26	6
27	7
28	7
29	7
30	7
31	7
32	7
33	8
34	8
35	9
36	9
37	9
38	9
39	10
40	10
41	10
42	10
43	10
44	10
45	11
46	11
47	12
48	12
49	12
50	12
51	12
52	12
53	13
54	13
55	13
56	13
57	14
58	14
59	14
60	14
61	14
62	14
63	15
64	15
65	16
66	16
67	16
68	16
69	17
70	17
71	17
72	17
73	17
74	17
75	18
76	18
77	19
78	19
79	19
80	19
81	20
82	20