A356045 - cp's OEIS frontend

A356045 Square array T(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=1..n} sigma_k(j) * floor(n/j).

n	a(n)
1	1
2	1
3	4
4	1
5	5
6	7
7	1
8	7
9	10
10	13
11	1
12	11
13	18
14	21
15	16
16	1
17	19
18	40
19	45
20	28
21	25
22	1
23	35
24	102
25	123
26	72
27	48
28	28
29	1
30	67
31	280
32	393
33	250
34	138
35	57
36	38
37	1
38	131
39	798
40	1371
41	1020
42	540
43	189
44	83
45	44
46	1
47	259
48	2320
49	5025
50	4498
51	2514
52	885
53	301
54	101
55	53
56	1
57	515
58	6822
59	18963
60	20652
61	12828
62	4917
63	1553
64	403
65	129
66	56

[1, 1, 4, 1, 5, 7, 1, 7, 10, 13, 1, 11, 18, 21, 16, 1, 19, 40, 45, 28, 25, 1, 35, 102, 123, 72, 48, 28, 1, 67, 280, 393, 250, 138, 57, 38, 1, 131, 798, 1371, 1020, 540, 189, 83, 44, 1, 259, 2320, 5025, 4498, 2514, 885, 301, 101, 53, 1, 515, 6822, 18963, 20652, 12828, 4917, 1553, 403, 129, 56]

cp's OEIS Frontend

A356045 Square array T(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=1..n} sigma_k(j) * floor(n/j).

Table of values

List of values