A261144 - cp's OEIS frontend

A261144 Irregular triangle of numbers that are squarefree and smooth (row n contains squarefree p-smooth numbers, where p is the n-th prime).

n	a(n)
1	1
2	2
3	1
4	2
5	3
6	6
7	1
8	2
9	3
10	5
11	6
12	10
13	15
14	30
15	1
16	2
17	3
18	5
19	6
20	7
21	10
22	14
23	15
24	21
25	30
26	35
27	42
28	70
29	105
30	210
31	1
32	2
33	3
34	5
35	6
36	7
37	10
38	11
39	14
40	15
41	21
42	22
43	30
44	33
45	35
46	42
47	55
48	66
49	70
50	77
51	105
52	110
53	154
54	165
55	210
56	231
57	330
58	385
59	462
60	770
61	1155
62	2310
63	1
64	2
65	3
66	5
67	6
68	7
69	10
70	11
71	13
72	14
73	15
74	21
75	22
76	26
77	30
78	33
79	35
80	39
81	42

[1, 2, 1, 2, 3, 6, 1, 2, 3, 5, 6, 10, 15, 30, 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 21, 22, 26, 30, 33, 35, 39, 42]

cp's OEIS Frontend

A261144 Irregular triangle of numbers that are squarefree and smooth (row n contains squarefree p-smooth numbers, where p is the n-th prime).

Table of values

List of values