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 | 0 |
2 | 2 |
3 | 6 |
4 | 36 |
5 | 260 |
6 | 2190 |
7 | 21882 |
8 | 248696 |
9 | 3181320 |
10 | 45229050 |
11 | 707208590 |
12 | 12063902532 |
13 | 222939837276 |
14 | 4436813677478 |
15 | 94605994108290 |
16 | 2151763873634160 |
17 | 51999544476324752 |
18 | 1330540380342907506 |
19 | 35936656483848501654 |
20 | 1021700660649312689660 |