A321877 - cp's OEIS frontend

A321877 Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of Product_{j>=1} (1 + x^j)^sigma_k(j).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	4
10	1
11	1
12	5
13	7
14	6
15	1
16	1
17	9
18	15
19	14
20	10
21	1
22	1
23	17
24	37
25	41
26	28
27	17
28	1
29	1
30	33
31	99
32	137
33	107
34	58
35	25
36	1
37	1
38	65
39	277
40	491
41	487
42	286
43	106
44	38
45	1
46	1
47	129
48	795
49	1829
50	2429
51	1749
52	700
53	201
54	59
55	1
56	1
57	257
58	2317
59	6971
60	12763
61	12056
62	5901
63	1735
64	372
65	86

[1, 1, 1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 5, 7, 6, 1, 1, 9, 15, 14, 10, 1, 1, 17, 37, 41, 28, 17, 1, 1, 33, 99, 137, 107, 58, 25, 1, 1, 65, 277, 491, 487, 286, 106, 38, 1, 1, 129, 795, 1829, 2429, 1749, 700, 201, 59, 1, 1, 257, 2317, 6971, 12763, 12056, 5901, 1735, 372, 86]

cp's OEIS Frontend

A321877 Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of Product_{j>=1} (1 + x^j)^sigma_k(j).

Table of values

List of values