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 | 3 |
| 2 | 19 |
| 3 | 167 |
| 4 | 1831 |
| 5 | 23843 |
| 6 | 358339 |
| 7 | 6097607 |
| 8 | 115840951 |
| 9 | 2430329603 |
| 10 | 55812650419 |
| 11 | 1392737182247 |
| 12 | 37528377195271 |
| 13 | 1086086115808163 |
| 14 | 33600297897404899 |
| 15 | 1106632150406054087 |
| 16 | 38659524289511283991 |
| 17 | 1427864216163041265923 |