A091988 - OEIS

A091988 as a simple table

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

[1,2,4,5,5,6,6,7,7,8,8,8,9,9,9,10,10,10,10,11,11, 11,11,12,12,12,12,13,13,13,13,14,14,14,14,14,15, 15,15,15,15,16,16,16,16,17,17,17,17,17,17,18,18, 18,18,18,19,19,19,19,19,20,20,20,20,20,20,21,21, 21,21,21,22,22]

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

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

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