cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A079110 Number of 2's in n# (n primorial) = 2's in A002110(n).

Table of values

n a(n)
0 0
1 1
2 0
3 0
4 1
5 1
6 0
7 0
8 0
9 3
10 1
11 1
12 1
13 4
14 1
15 1
16 1
17 4
18 2
19 2
20 1
21 5
22 2
23 4
24 1
25 3
26 3
27 11
28 1
29 4
30 4
31 2
32 6
33 5
34 2
35 5
36 8
37 5
38 3
39 7
40 5
41 9
42 8
43 7
44 12
45 5
46 5
47 8
48 7
49 7
50 6
51 16
52 14
53 7
54 12
55 11
56 7
57 12
58 6
59 10
60 13
61 7
62 14
63 12
64 16
65 11
66 14
67 10
68 14
69 11
70 22
71 12
72 10
73 27
74 19
75 18
76 6
77 17
78 18
79 16
80 13
81 16
82 19
83 16
84 12
85 20
86 21
87 12
88 21
89 18
90 18

List of values

[0, 1, 0, 0, 1, 1, 0, 0, 0, 3, 1, 1, 1, 4, 1, 1, 1, 4, 2, 2, 1, 5, 2, 4, 1, 3, 3, 11, 1, 4, 4, 2, 6, 5, 2, 5, 8, 5, 3, 7, 5, 9, 8, 7, 12, 5, 5, 8, 7, 7, 6, 16, 14, 7, 12, 11, 7, 12, 6, 10, 13, 7, 14, 12, 16, 11, 14, 10, 14, 11, 22, 12, 10, 27, 19, 18, 6, 17, 18, 16, 13, 16, 19, 16, 12, 20, 21, 12, 21, 18, 18]