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 | 1 |
| 2 | 65 |
| 3 | 731 |
| 4 | 4162 |
| 5 | 15629 |
| 6 | 47515 |
| 7 | 117655 |
| 8 | 266372 |
| 9 | 532905 |
| 10 | 1015885 |
| 11 | 1771571 |
| 12 | 3042422 |
| 13 | 4826821 |
| 14 | 7647575 |
| 15 | 11424799 |
| 16 | 17047816 |
| 17 | 24137585 |
| 18 | 34638825 |
| 19 | 47045899 |
| 20 | 65047898 |
| 21 | 86005805 |
| 22 | 115152115 |
| 23 | 148035911 |
| 24 | 194717932 |
| 25 | 244203145 |
| 26 | 313743365 |
| 27 | 388487763 |
| 28 | 489680110 |
| 29 | 594823349 |