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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.

A038299 Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.

Table of values

n a(n)
0 1
1 9
2 9
3 81
4 162
5 81
6 729
7 2187
8 2187
9 729
10 6561
11 26244
12 39366
13 26244
14 6561
15 59049
16 295245
17 590490
18 590490
19 295245
20 59049
21 531441
22 3188646
23 7971615
24 10628820
25 7971615
26 3188646
27 531441
28 4782969
29 33480783
30 100442349
31 167403915

List of values

[1, 9, 9, 81, 162, 81, 729, 2187, 2187, 729, 6561, 26244, 39366, 26244, 6561, 59049, 295245, 590490, 590490, 295245, 59049, 531441, 3188646, 7971615, 10628820, 7971615, 3188646, 531441, 4782969, 33480783, 100442349, 167403915]