A037088 - cp's OEIS frontend

A037088 Triangle read by rows: T(n,k) is number of numbers x, 2^n <= x < 2^(n+1), with k prime factors (counted with multiplicity).

n	a(n)
1	2
2	2
3	2
4	2
5	4
6	2
7	5
8	4
9	5
10	2
11	7
12	12
13	6
14	5
15	2
16	13
17	20
18	17
19	7
20	5
21	2
22	23
23	40
24	30
25	20
26	8
27	5
28	2
29	43
30	75
31	65
32	37
33	21
34	8
35	5
36	2
37	75
38	147
39	131
40	81
41	41
42	22
43	8
44	5
45	2
46	137
47	285
48	257
49	173
50	91
51	44
52	22
53	8
54	5
55	2
56	255
57	535
58	536
59	344
60	199
61	96
62	46
63	22
64	8
65	5
66	2
67	464
68	1062
69	1033
70	736
71	403
72	215
73	99
74	47

[2, 2, 2, 2, 4, 2, 5, 4, 5, 2, 7, 12, 6, 5, 2, 13, 20, 17, 7, 5, 2, 23, 40, 30, 20, 8, 5, 2, 43, 75, 65, 37, 21, 8, 5, 2, 75, 147, 131, 81, 41, 22, 8, 5, 2, 137, 285, 257, 173, 91, 44, 22, 8, 5, 2, 255, 535, 536, 344, 199, 96, 46, 22, 8, 5, 2, 464, 1062, 1033, 736, 403, 215, 99, 47]

cp's OEIS Frontend

A037088 Triangle read by rows: T(n,k) is number of numbers x, 2^n <= x < 2^(n+1), with k prime factors (counted with multiplicity).

Table of values

List of values