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 | 9 |
| 1 | 10 |
| 2 | 19 |
| 3 | 48 |
| 4 | 211 |
| 5 | 470 |
| 6 | 681 |
| 7 | 1151 |
| 8 | 21399 |
| 9 | 22550 |
| 10 | 43949 |
| 11 | 110448 |
| 12 | 485741 |
| 13 | 1081930 |
| 14 | 1567671 |
| 15 | 2649601 |
| 16 | 49260489 |
| 17 | 51910090 |
| 18 | 101170579 |
| 19 | 254251248 |
| 20 | 1118175571 |
| 21 | 2490602390 |
| 22 | 3608777961 |
| 23 | 6099380351 |
| 24 | 113397624279 |
| 25 | 119497004630 |
| 26 | 232894628909 |
| 27 | 585286262448 |