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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.

A100226 Triangle, read by rows, of the coefficients of [x^k] in G100225(x)^n such that the row sums are 3^n-1 for n>0, where G100225(x) is the g.f. of A100225.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 5
6 1
7 3
8 9
9 13
10 1
11 4
12 14
13 28
14 33
15 1
16 5
17 20
18 50
19 85
20 81
21 1
22 6
23 27
24 80
25 171
26 246
27 197
28 1
29 7
30 35
31 119
32 301
33 553
34 693
35 477
36 1
37 8
38 44
39 168
40 486
41 1064
42 1724
43 1912
44 1153
45 1
46 9
47 54
48 228
49 738
50 1854
51 3600
52 5220
53 5193
54 2785
55 1
56 10
57 65
58 300
59 1070
60 3012
61 6730
62 11760

List of values

[1, 1, 1, 1, 2, 5, 1, 3, 9, 13, 1, 4, 14, 28, 33, 1, 5, 20, 50, 85, 81, 1, 6, 27, 80, 171, 246, 197, 1, 7, 35, 119, 301, 553, 693, 477, 1, 8, 44, 168, 486, 1064, 1724, 1912, 1153, 1, 9, 54, 228, 738, 1854, 3600, 5220, 5193, 2785, 1, 10, 65, 300, 1070, 3012, 6730, 11760]