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 | 1 |
2 | 4 |
3 | 19 |
4 | 154 |
5 | 1456 |
6 | 18136 |
7 | 260002 |
8 | 4430812 |
9 | 85170988 |
10 | 1854422236 |
11 | 44693165716 |
12 | 1188169271488 |
13 | 34434053438968 |
14 | 1082632555160248 |
15 | 36666259172292016 |
16 | 1331754793762045456 |
17 | 51622725829298301520 |
18 | 2127683533625205288400 |