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.

A023821 Sum of exponents in prime-power factorization of C(3n,n-2).

Table of values

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

List of values

[0, 2, 3, 3, 6, 5, 6, 8, 8, 9, 11, 9, 10, 10, 12, 11, 12, 13, 13, 14, 17, 15, 17, 17, 16, 18, 19, 17, 20, 17, 19, 21, 19, 19, 22, 20, 20, 21, 22, 21, 23, 26, 26, 28, 29, 25, 29, 28, 27, 28, 29, 26, 32, 31, 31, 32, 30, 31, 33, 33, 31, 31, 35, 33, 32, 30, 31, 32, 36, 32, 35, 34, 33, 38, 37, 35, 38, 35]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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