A144823 - cp's OEIS frontend

A144823 Square array A(n,k), n>=1, k>=1, read by antidiagonals, with A(1,k)=1 and sequence a_k of column k shifts left when Dirichlet convolution with a_k (DC:(b,a_k)->a) applied k times.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	3
10	4
11	1
12	1
13	4
14	9
15	9
16	1
17	1
18	5
19	16
20	30
21	18
22	1
23	1
24	6
25	25
26	70
27	90
28	40
29	1
30	1
31	7
32	36
33	135
34	280
35	288
36	80
37	1
38	1
39	8
40	49
41	231
42	675
43	1168
44	864
45	168
46	1
47	1
48	9
49	64
50	364
51	1386
52	3475
53	4672
54	2647
55	340
56	1
57	1
58	10
59	81
60	540
61	2548
62	8496
63	17375
64	18884
65	7968
66	698
67	1
68	1
69	11
70	100

[1, 1, 1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 4, 9, 9, 1, 1, 5, 16, 30, 18, 1, 1, 6, 25, 70, 90, 40, 1, 1, 7, 36, 135, 280, 288, 80, 1, 1, 8, 49, 231, 675, 1168, 864, 168, 1, 1, 9, 64, 364, 1386, 3475, 4672, 2647, 340, 1, 1, 10, 81, 540, 2548, 8496, 17375, 18884, 7968, 698, 1, 1, 11, 100]

cp's OEIS Frontend

A144823 Square array A(n,k), n>=1, k>=1, read by antidiagonals, with A(1,k)=1 and sequence a_k of column k shifts left when Dirichlet convolution with a_k (DC:(b,a_k)->a) applied k times.

Table of values

List of values