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) |
|---|---|
| 1 | 1 |
| 2 | 170911549183 |
| 3 | 33894540622394 |
| 4 | 4346957030144256 |
| 5 | 133528172514624 |
| 6 | 140621059298755526 |
| 7 | 153245517148800 |
| 8 | 294998638981939200 |
| 9 | 55333752398428896 |
| 10 | 34178553690432192 |
| 11 | 44590694400 |
| 12 | 2330232827455554048 |
| 13 | 23298374383021440 |
| 14 | 14385471333209856 |
| 15 | 150731886270873600 |