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 | 2 |
| 2 | 18 |
| 3 | 92 |
| 4 | 340 |
| 5 | 1010 |
| 6 | 2562 |
| 7 | 5768 |
| 8 | 11832 |
| 9 | 22530 |
| 10 | 40370 |
| 11 | 68772 |
| 12 | 112268 |
| 13 | 176722 |
| 14 | 269570 |
| 15 | 400080 |
| 16 | 579632 |
| 17 | 822018 |
| 18 | 1143762 |
| 19 | 1564460 |
| 20 | 2107140 |
| 21 | 2798642 |
| 22 | 3670018 |
| 23 | 4756952 |
| 24 | 6100200 |
| 25 | 7746050 |
| 26 | 9746802 |
| 27 | 12161268 |
| 28 | 15055292 |
| 29 | 18502290 |
| 30 | 22583810 |
| 31 | 27390112 |
| 32 | 33020768 |
| 33 | 39585282 |