A187321 - OEIS

A187321 as a simple table

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

[0,0,1,1,3,3,4,4,6,6,7,7,9,9,10,10,12,12,13,13,15, 15,16,16,18,18,19,19,21,21,22,22,24,24,25,25,27, 27,28,28,30,30,31,31,33,33,34,34,36,36,37,37,39, 39,40,40,42,42,43,43,45,45,46,46,48,48,49,49,51, 51,52,52,54]

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

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

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