A211707 - cp's OEIS frontend

A211707 Rectangular array: R(n,k)=n+[n/2+1/2]+...+[n/k+1/2], where [ ]=floor and k>=1, by antidiagonals.

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

[1, 2, 2, 3, 3, 2, 4, 5, 4, 2, 5, 6, 6, 5, 2, 6, 8, 7, 7, 5, 2, 7, 9, 10, 8, 8, 5, 2, 8, 11, 11, 11, 9, 9, 5, 2, 9, 12, 13, 13, 12, 10, 9, 5, 2, 10, 14, 15, 15, 14, 13, 11, 9, 5, 2, 11, 15, 17, 17, 16, 15, 14, 12, 9, 5, 2, 12, 17, 18, 19, 19, 17, 16, 15, 12, 9, 5, 2, 13, 18, 21]

cp's OEIS Frontend

A211707 Rectangular array: R(n,k)=n+[n/2+1/2]+...+[n/k+1/2], where [ ]=floor and k>=1, by antidiagonals.

Table of values

List of values

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

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

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