A330394 - cp's OEIS frontend

A330394 Irregular triangle T(n,k) read by rows in which n-th row lists in increasing order all integers m such that Omega(m) = n and each prime factor p of m has index pi(p) <= n.

n	a(n)
0	1
1	2
2	4
3	6
4	9
5	8
6	12
7	18
8	20
9	27
10	30
11	45
12	50
13	75
14	125
15	16
16	24
17	36
18	40
19	54
20	56
21	60
22	81
23	84
24	90
25	100
26	126
27	135
28	140
29	150
30	189
31	196
32	210
33	225
34	250
35	294
36	315
37	350
38	375
39	441
40	490
41	525
42	625
43	686
44	735
45	875
46	1029
47	1225
48	1715
49	2401
50	32
51	48
52	72
53	80
54	108
55	112
56	120
57	162

[1, 2, 4, 6, 9, 8, 12, 18, 20, 27, 30, 45, 50, 75, 125, 16, 24, 36, 40, 54, 56, 60, 81, 84, 90, 100, 126, 135, 140, 150, 189, 196, 210, 225, 250, 294, 315, 350, 375, 441, 490, 525, 625, 686, 735, 875, 1029, 1225, 1715, 2401, 32, 48, 72, 80, 108, 112, 120, 162]

cp's OEIS Frontend

A330394 Irregular triangle T(n,k) read by rows in which n-th row lists in increasing order all integers m such that Omega(m) = n and each prime factor p of m has index pi(p) <= n.

Table of values

List of values