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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.

A023819 Sum of exponents in prime-power factorization of C(3n,n).

Table of values

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

List of values

[0, 1, 2, 4, 4, 4, 6, 8, 6, 7, 8, 11, 11, 11, 11, 12, 10, 12, 11, 15, 13, 13, 18, 18, 17, 16, 17, 19, 17, 18, 19, 22, 18, 18, 20, 21, 19, 21, 22, 23, 22, 21, 23, 28, 27, 27, 28, 30, 27, 28, 26, 28, 29, 28, 31, 32, 29, 31, 31, 35, 32, 33, 35, 34, 31, 30, 31, 34, 31, 32, 35, 36, 33, 34, 35, 38, 37, 36, 36]

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