A273663 - OEIS

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A273663 as a simple table

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

[0,0,1,2,3,3,4,4,5,6,7,7,8,8,9,10,11,12,13,14,15, 16,17,17,18,18,19,20,21,21,22,22,23,24,25,25,26, 26,27,28,29,30,31,32,33,34,35,35,36,36,37,38,39, 39,40,40,41,42,43,43,44,44,45,46,47,48,49,50,51, 52,53,53,54,54,55,56,57,57,58,58,59,60,61,61]

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

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

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