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 | 127 |
| 1 | 1927 |
| 2 | 6553 |
| 3 | 10922 |
| 4 | 19252 |
| 5 | 98731 |
| 6 | 164529 |
| 7 | 295709 |
| 8 | 559292 |
| 9 | 1083662 |
| 10 | 2132519 |
| 11 | 4230034 |
| 12 | 125829127 |
| 13 | 427819033 |
| 14 | 713031722 |
| 15 | 1258291252 |
| 16 | 6467616811 |
| 17 | 10779361329 |
| 18 | 19377684509 |
| 19 | 36649828412 |
| 20 | 71017955342 |