A131981 - cp's OEIS frontend

A131981 Number of early bird numbers <= n.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	2
22	2
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	4
32	5
33	5
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	8
43	9
44	9
45	10
46	10
47	10
48	10
49	10
50	10
51	11
52	12
53	13
54	14
55	14
56	15
57	15
58	15
59	15
60	15
61	16
62	17
63	18
64	19
65	20
66	20
67	21
68	21
69	21
70	21
71	22
72	23
73	24
74	25
75	26
76	27
77	27
78	28
79	28
80	28
81	29
82	30
83	31
84	32

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 8, 9, 9, 10, 10, 10, 10, 10, 10, 11, 12, 13, 14, 14, 15, 15, 15, 15, 15, 16, 17, 18, 19, 20, 20, 21, 21, 21, 21, 22, 23, 24, 25, 26, 27, 27, 28, 28, 28, 29, 30, 31, 32]

cp's OEIS Frontend

A131981 Number of early bird numbers <= n.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	2
22	2
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	4
32	5
33	5
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	8
43	9
44	9
45	10
46	10
47	10
48	10
49	10
50	10
51	11
52	12
53	13
54	14
55	14
56	15
57	15
58	15
59	15
60	15
61	16
62	17
63	18
64	19
65	20
66	20
67	21
68	21
69	21
70	21
71	22
72	23
73	24
74	25
75	26
76	27
77	27
78	28
79	28
80	28
81	29
82	30
83	31
84	32

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	2
22	2
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	4
32	5
33	5
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	8
43	9
44	9
45	10
46	10
47	10
48	10
49	10
50	10
51	11
52	12
53	13
54	14
55	14
56	15
57	15
58	15
59	15
60	15
61	16
62	17
63	18
64	19
65	20
66	20
67	21
68	21
69	21
70	21
71	22
72	23
73	24
74	25
75	26
76	27
77	27
78	28
79	28
80	28
81	29
82	30
83	31
84	32

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	2
22	2
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	3
31	4
32	5
33	5
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	8
43	9
44	9
45	10
46	10
47	10
48	10
49	10
50	10
51	11
52	12
53	13
54	14
55	14
56	15
57	15
58	15
59	15
60	15
61	16
62	17
63	18
64	19
65	20
66	20
67	21
68	21
69	21
70	21
71	22
72	23
73	24
74	25
75	26
76	27
77	27
78	28
79	28
80	28
81	29
82	30
83	31
84	32