A090621 - OEIS

A090621 as a simple table

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6
32	7
33	7
34	8
35	8
36	8
37	8
38	8
39	8
40	9
41	9
42	9
43	9
44	10
45	10
46	10
47	10
48	11
49	11
50	11
51	11
52	12
53	12
54	12
55	12
56	13
57	13
58	13
59	13
60	14
61	14
62	14
63	14
64	15
65	15
66	16
67	16
68	16
69	16
70	16
71	16
72	17
73	17
74	17
75	17
76	18
77	18
78	18
79	18
80	19
81	19
82	19
83	19

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

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6
32	7
33	7
34	8
35	8
36	8
37	8
38	8
39	8
40	9
41	9
42	9
43	9
44	10
45	10
46	10
47	10
48	11
49	11
50	11
51	11
52	12
53	12
54	12
55	12
56	13
57	13
58	13
59	13
60	14
61	14
62	14
63	14
64	15
65	15
66	16
67	16
68	16
69	16
70	16
71	16
72	17
73	17
74	17
75	17
76	18
77	18
78	18
79	18
80	19
81	19
82	19
83	19

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6
32	7
33	7
34	8
35	8
36	8
37	8
38	8
39	8
40	9
41	9
42	9
43	9
44	10
45	10
46	10
47	10
48	11
49	11
50	11
51	11
52	12
53	12
54	12
55	12
56	13
57	13
58	13
59	13
60	14
61	14
62	14
63	14
64	15
65	15
66	16
67	16
68	16
69	16
70	16
71	16
72	17
73	17
74	17
75	17
76	18
77	18
78	18
79	18
80	19
81	19
82	19
83	19

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	4
19	4
20	4
21	4
22	4
23	4
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6
32	7
33	7
34	8
35	8
36	8
37	8
38	8
39	8
40	9
41	9
42	9
43	9
44	10
45	10
46	10
47	10
48	11
49	11
50	11
51	11
52	12
53	12
54	12
55	12
56	13
57	13
58	13
59	13
60	14
61	14
62	14
63	14
64	15
65	15
66	16
67	16
68	16
69	16
70	16
71	16
72	17
73	17
74	17
75	17
76	18
77	18
78	18
79	18
80	19
81	19
82	19
83	19