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.

A023828 Sum of exponents in prime-power factorization of C(4n,n-2).

Table of values

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

List of values

[0, 3, 5, 5, 5, 9, 9, 11, 8, 8, 10, 12, 13, 15, 15, 16, 13, 16, 17, 16, 16, 18, 20, 22, 18, 20, 21, 20, 20, 22, 24, 25, 24, 25, 26, 26, 24, 28, 28, 29, 24, 28, 29, 29, 28, 29, 32, 34, 31, 31, 33, 31, 31, 34, 32, 34, 30, 33, 34, 37, 37, 40, 43, 42, 37, 39, 40, 41, 41, 41, 43, 44, 40, 45, 46, 46, 45, 47]

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