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.
n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 18 |
3 | 204 |
4 | 2550 |
5 | 33660 |
6 | 460020 |
7 | 6440280 |
8 | 91773990 |
9 | 1325624300 |
10 | 19354114780 |
11 | 285033326760 |
12 | 4227994346940 |
13 | 63094684869720 |
14 | 946420273045800 |
15 | 14259398780556720 |
16 | 215673406555920390 |
17 | 3273161111260438860 |
18 | 49824785804742235980 |
19 | 760483572809223601800 |