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 | 81 |
| 2 | 270 |
| 3 | 746 |
| 4 | 1796 |
| 5 | 3896 |
| 6 | 7790 |
| 7 | 14588 |
| 8 | 25885 |
| 9 | 43903 |
| 10 | 71658 |
| 11 | 113154 |
| 12 | 173606 |
| 13 | 259694 |
| 14 | 379850 |
| 15 | 544580 |
| 16 | 766823 |
| 17 | 1062349 |
| 18 | 1450198 |
| 19 | 1953162 |
| 20 | 2598312 |
| 21 | 3417572 |
| 22 | 4448342 |
| 23 | 5734172 |
| 24 | 7325489 |
| 25 | 9280379 |
| 26 | 11665426 |
| 27 | 14556610 |
| 28 | 18040266 |
| 29 | 22214106 |
| 30 | 27188306 |