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 | 14 |
| 2 | 65 |
| 3 | 156 |
| 4 | 456 |
| 5 | 1066 |
| 6 | 2250 |
| 7 | 4720 |
| 8 | 9426 |
| 9 | 17590 |
| 10 | 32801 |
| 11 | 58904 |
| 12 | 102650 |
| 13 | 176646 |
| 14 | 298066 |
| 15 | 491792 |
| 16 | 803923 |
| 17 | 1293450 |
| 18 | 2051156 |
| 19 | 3221716 |
| 20 | 5004028 |
| 21 | 7682744 |
| 22 | 11703580 |
| 23 | 17663312 |
| 24 | 26423351 |
| 25 | 39248618 |
| 26 | 57866503 |
| 27 | 84685920 |
| 28 | 123188502 |
| 29 | 178054416 |
| 30 | 255782770 |
| 31 | 365467216 |