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 | 4 |
| 2 | 13 |
| 3 | 39 |
| 4 | 106 |
| 5 | 259 |
| 6 | 574 |
| 7 | 1170 |
| 8 | 2223 |
| 9 | 3982 |
| 10 | 6787 |
| 11 | 11089 |
| 12 | 17472 |
| 13 | 26677 |
| 14 | 39628 |
| 15 | 57460 |
| 16 | 81549 |
| 17 | 113544 |
| 18 | 155401 |
| 19 | 209419 |
| 20 | 278278 |
| 21 | 365079 |
| 22 | 473386 |
| 23 | 607270 |
| 24 | 771355 |
| 25 | 970866 |
| 26 | 1211679 |
| 27 | 1500373 |
| 28 | 1844284 |
| 29 | 2251561 |
| 30 | 2731224 |
| 31 | 3293224 |
| 32 | 3948505 |
| 33 | 4709068 |
| 34 | 5588037 |