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 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 14 |
| 4 | 44 |
| 5 | 100 |
| 6 | 274 |
| 7 | 581 |
| 8 | 1417 |
| 9 | 2978 |
| 10 | 6660 |
| 11 | 13510 |
| 12 | 29479 |
| 13 | 58087 |
| 14 | 120478 |
| 15 | 236850 |
| 16 | 476913 |
| 17 | 916940 |
| 18 | 1812498 |
| 19 | 3437043 |
| 20 | 6657656 |
| 21 | 12512273 |
| 22 | 23780682 |
| 23 | 44194499 |
| 24 | 83117200 |
| 25 | 152837210 |
| 26 | 283431014 |
| 27 | 517571202 |
| 28 | 949844843 |
| 29 | 1719175176 |
| 30 | 3127751062 |
| 31 | 5618969956 |
| 32 | 10133425489 |