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.

A162845 Sum of digits of binomial(3n,n).

Table of values

n a(n)
0 1
1 3
2 6
3 12
4 18
5 6
6 24
7 18
8 27
9 39
10 18
11 36
12 36
13 36
14 42
15 60
16 63
17 63
18 78
19 72
20 72
21 63
22 72
23 90
24 72
25 99
26 90
27 75
28 117
29 108
30 90
31 99
32 117
33 117
34 99
35 162
36 126
37 144
38 153
39 153
40 153
41 159
42 150
43 126
44 153
45 114
46 144
47 171
48 171
49 171
50 162
51 162
52 198
53 180
54 186
55 207
56 180
57 189
58 180
59 234
60 207

List of values

[1, 3, 6, 12, 18, 6, 24, 18, 27, 39, 18, 36, 36, 36, 42, 60, 63, 63, 78, 72, 72, 63, 72, 90, 72, 99, 90, 75, 117, 108, 90, 99, 117, 117, 99, 162, 126, 144, 153, 153, 153, 159, 150, 126, 153, 114, 144, 171, 171, 171, 162, 162, 198, 180, 186, 207, 180, 189, 180, 234, 207]