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 | 6 |
| 2 | 22 |
| 3 | 64 |
| 4 | 162 |
| 5 | 374 |
| 6 | 809 |
| 7 | 1668 |
| 8 | 3316 |
| 9 | 6408 |
| 10 | 12108 |
| 11 | 22468 |
| 12 | 41081 |
| 13 | 74202 |
| 14 | 132666 |
| 15 | 235160 |
| 16 | 413790 |
| 17 | 723530 |
| 18 | 1258225 |
| 19 | 2177640 |
| 20 | 3753096 |
| 21 | 6444336 |
| 22 | 11028792 |
| 23 | 18818664 |
| 24 | 32024977 |
| 25 | 54367374 |
| 26 | 92094334 |
| 27 | 155688208 |
| 28 | 262711866 |
| 29 | 442556798 |
| 30 | 744355673 |
| 31 | 1250157228 |