A144374 - cp's OEIS frontend

A144374 Triangle T(n,k), n>=1, 1<=k<=n, read by rows, where sequence a_k of column k begins with (k+1) 1's and a_k(n) shifts k places down under Dirichlet convolution.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	2
9	1
10	1
11	9
12	2
13	2
14	1
15	1
16	18
17	5
18	2
19	2
20	1
21	1
22	40
23	4
24	3
25	2
26	2
27	1
28	1
29	80
30	12
31	4
32	3
33	2
34	2
35	1
36	1
37	168
38	8
39	6
40	2
41	3
42	2
43	2
44	1
45	1
46	340
47	28
48	6
49	6
50	2
51	3
52	2
53	2
54	1
55	1
56	698
57	17
58	10
59	4
60	4
61	2
62	3
63	2
64	2
65	1
66	1
67	1396
68	60
69	13
70	8
71	4
72	4
73	2
74	3
75	2
76	2
77	1
78	1
79	2844
80	34
81	16
82	5
83	6
84	2
85	4
86	2
87	3
88	2
89	2
90	1
91	1
92	5688

[1, 1, 1, 2, 1, 1, 4, 2, 1, 1, 9, 2, 2, 1, 1, 18, 5, 2, 2, 1, 1, 40, 4, 3, 2, 2, 1, 1, 80, 12, 4, 3, 2, 2, 1, 1, 168, 8, 6, 2, 3, 2, 2, 1, 1, 340, 28, 6, 6, 2, 3, 2, 2, 1, 1, 698, 17, 10, 4, 4, 2, 3, 2, 2, 1, 1, 1396, 60, 13, 8, 4, 4, 2, 3, 2, 2, 1, 1, 2844, 34, 16, 5, 6, 2, 4, 2, 3, 2, 2, 1, 1, 5688]

cp's OEIS Frontend

A144374 Triangle T(n,k), n>=1, 1<=k<=n, read by rows, where sequence a_k of column k begins with (k+1) 1's and a_k(n) shifts k places down under Dirichlet convolution.

Table of values

List of values