A131380 - OEIS

A131380 as a simple table

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

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

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

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

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