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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.

A038291 Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*1^j.

Table of values

n a(n)
0 1
1 9
2 1
3 81
4 18
5 1
6 729
7 243
8 27
9 1
10 6561
11 2916
12 486
13 36
14 1
15 59049
16 32805
17 7290
18 810
19 45
20 1
21 531441
22 354294
23 98415
24 14580
25 1215
26 54
27 1
28 4782969
29 3720087
30 1240029
31 229635
32 25515
33 1701
34 63
35 1
36 43046721
37 38263752
38 14880348
39 3306744
40 459270
41 40824
42 2268
43 72
44 1

List of values

[1, 9, 1, 81, 18, 1, 729, 243, 27, 1, 6561, 2916, 486, 36, 1, 59049, 32805, 7290, 810, 45, 1, 531441, 354294, 98415, 14580, 1215, 54, 1, 4782969, 3720087, 1240029, 229635, 25515, 1701, 63, 1, 43046721, 38263752, 14880348, 3306744, 459270, 40824, 2268, 72, 1]