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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.

A225477 Triangle read by rows, 3^k*s_3(n, k) where s_m(n, k) are the Stirling-Frobenius cycle numbers of order m; n >= 0, k >= 0.

Table of values

n a(n)
0 1
1 2
2 3
3 10
4 21
5 9
6 80
7 198
8 135
9 27
10 880
11 2418
12 2079
13 702
14 81
15 12320
16 36492
17 36360
18 16065
19 3240
20 243
21 209440
22 657324
23 727596
24 382185
25 103275
26 13851
27 729
28 4188800
29 13774800
30 16523892
31 9826488
32 3212055
33 586845
34 56133
35 2187
36 96342400
37 329386800
38 421373916
39 275580900
40 103356729
41 23133600
42 3051594
43 218700
44 6561

List of values

[1, 2, 3, 10, 21, 9, 80, 198, 135, 27, 880, 2418, 2079, 702, 81, 12320, 36492, 36360, 16065, 3240, 243, 209440, 657324, 727596, 382185, 103275, 13851, 729, 4188800, 13774800, 16523892, 9826488, 3212055, 586845, 56133, 2187, 96342400, 329386800, 421373916, 275580900, 103356729, 23133600, 3051594, 218700, 6561]