A215781 - 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.

A215781 as a simple table

n	a(n)
0	0
1	1
2	2
3	3
4	3
5	4
6	5
7	6
8	6
9	7
10	8
11	9
12	9
13	10
14	11
15	11
16	12
17	13
18	14
19	14
20	15
21	16
22	17
23	17
24	18
25	19
26	20
27	20
28	21
29	22
30	22
31	23
32	24
33	25
34	25
35	26
36	27
37	28
38	28
39	29
40	30
41	31
42	31
43	32
44	33
45	33
46	34
47	35
48	36
49	36
50	37
51	38
52	39
53	39
54	40
55	41
56	41
57	42

[0,1,2,3,3,4,5,6,6,7,8,9,9,10,11,11,12,13,14,14, 15,16,17,17,18,19,20,20,21,22,22,23,24,25,25,26, 27,28,28,29,30,31,31,32,33,33,34,35,36,36,37,38, 39,39,40,41,41,42]

n	a(n)
0	0
1	1
2	2
3	3
4	3
5	4
6	5
7	6
8	6
9	7
10	8
11	9
12	9
13	10
14	11
15	11
16	12
17	13
18	14
19	14
20	15
21	16
22	17
23	17
24	18
25	19
26	20
27	20
28	21
29	22
30	22
31	23
32	24
33	25
34	25
35	26
36	27
37	28
38	28
39	29
40	30
41	31
42	31
43	32
44	33
45	33
46	34
47	35
48	36
49	36
50	37
51	38
52	39
53	39
54	40
55	41
56	41
57	42

n	a(n)
0	0
1	1
2	2
3	3
4	3
5	4
6	5
7	6
8	6
9	7
10	8
11	9
12	9
13	10
14	11
15	11
16	12
17	13
18	14
19	14
20	15
21	16
22	17
23	17
24	18
25	19
26	20
27	20
28	21
29	22
30	22
31	23
32	24
33	25
34	25
35	26
36	27
37	28
38	28
39	29
40	30
41	31
42	31
43	32
44	33
45	33
46	34
47	35
48	36
49	36
50	37
51	38
52	39
53	39
54	40
55	41
56	41
57	42

n	a(n)
0	0
1	1
2	2
3	3
4	3
5	4
6	5
7	6
8	6
9	7
10	8
11	9
12	9
13	10
14	11
15	11
16	12
17	13
18	14
19	14
20	15
21	16
22	17
23	17
24	18
25	19
26	20
27	20
28	21
29	22
30	22
31	23
32	24
33	25
34	25
35	26
36	27
37	28
38	28
39	29
40	30
41	31
42	31
43	32
44	33
45	33
46	34
47	35
48	36
49	36
50	37
51	38
52	39
53	39
54	40
55	41
56	41
57	42