A143091 - OEIS

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A143091 as a simple table

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

[1,1,2,3,3,4,5,5,6,8,8,8,9,9,11,12,12,12,14,14,14, 16,16,17,18,18,18,22,22,22,22,22,24,24,24,25,27, 27,27,27,27,31,33,33,33,34,34,34,36,36,36,36,36, 37,41,41,41,41,41,41,41,41,45,49,49,49,49,49,50, 51,51,51,54,54]

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

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

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