A306533 - cp's OEIS frontend

A306533 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{j=1..n} floor(n/j^k).

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	9
7	1
8	2
9	5
10	16
11	1
12	2
13	3
14	8
15	25
16	1
17	2
18	3
19	5
20	10
21	36
22	1
23	2
24	3
25	4
26	6
27	14
28	49
29	1
30	2
31	3
32	4
33	5
34	7
35	16
36	64
37	1
38	2
39	3
40	4
41	5
42	6
43	8
44	20
45	81
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	10
54	23
55	100
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	9
64	12
65	27
66	121
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	10
76	13
77	29
78	144
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	11
89	14
90	35
91	169

[1, 1, 4, 1, 3, 9, 1, 2, 5, 16, 1, 2, 3, 8, 25, 1, 2, 3, 5, 10, 36, 1, 2, 3, 4, 6, 14, 49, 1, 2, 3, 4, 5, 7, 16, 64, 1, 2, 3, 4, 5, 6, 8, 20, 81, 1, 2, 3, 4, 5, 6, 7, 10, 23, 100, 1, 2, 3, 4, 5, 6, 7, 9, 12, 27, 121, 1, 2, 3, 4, 5, 6, 7, 8, 10, 13, 29, 144, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 14, 35, 169]

cp's OEIS Frontend

A306533 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{j=1..n} floor(n/j^k).

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	9
7	1
8	2
9	5
10	16
11	1
12	2
13	3
14	8
15	25
16	1
17	2
18	3
19	5
20	10
21	36
22	1
23	2
24	3
25	4
26	6
27	14
28	49
29	1
30	2
31	3
32	4
33	5
34	7
35	16
36	64
37	1
38	2
39	3
40	4
41	5
42	6
43	8
44	20
45	81
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	10
54	23
55	100
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	9
64	12
65	27
66	121
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	10
76	13
77	29
78	144
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	11
89	14
90	35
91	169

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	9
7	1
8	2
9	5
10	16
11	1
12	2
13	3
14	8
15	25
16	1
17	2
18	3
19	5
20	10
21	36
22	1
23	2
24	3
25	4
26	6
27	14
28	49
29	1
30	2
31	3
32	4
33	5
34	7
35	16
36	64
37	1
38	2
39	3
40	4
41	5
42	6
43	8
44	20
45	81
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	10
54	23
55	100
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	9
64	12
65	27
66	121
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	10
76	13
77	29
78	144
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	11
89	14
90	35
91	169

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	9
7	1
8	2
9	5
10	16
11	1
12	2
13	3
14	8
15	25
16	1
17	2
18	3
19	5
20	10
21	36
22	1
23	2
24	3
25	4
26	6
27	14
28	49
29	1
30	2
31	3
32	4
33	5
34	7
35	16
36	64
37	1
38	2
39	3
40	4
41	5
42	6
43	8
44	20
45	81
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	10
54	23
55	100
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	9
64	12
65	27
66	121
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	10
76	13
77	29
78	144
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	11
89	14
90	35
91	169