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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.

A023847 Sum of exponents in prime-power factorization of binomial(5n, 2n).

Table of values

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

List of values

[0, 2, 4, 4, 6, 8, 8, 11, 11, 11, 13, 13, 13, 18, 16, 17, 17, 19, 18, 18, 22, 24, 21, 23, 23, 24, 28, 26, 26, 30, 29, 32, 28, 30, 31, 31, 32, 35, 35, 36, 36, 36, 37, 33, 35, 38, 36, 39, 36, 40, 40, 41, 45, 48, 43, 46, 46, 45, 50, 47, 49, 52, 52, 49, 46, 51, 51, 50, 50, 55, 51, 57, 54, 57, 57, 55, 59, 62]

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