A249037 - OEIS

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A249037 as a simple table

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

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

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

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

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