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 | 21 |
| 1 | 462 |
| 2 | 1785 |
| 3 | 3990 |
| 4 | 7077 |
| 5 | 11046 |
| 6 | 15897 |
| 7 | 21630 |
| 8 | 28245 |
| 9 | 35742 |
| 10 | 44121 |
| 11 | 53382 |
| 12 | 63525 |
| 13 | 74550 |
| 14 | 86457 |
| 15 | 99246 |
| 16 | 112917 |
| 17 | 127470 |
| 18 | 142905 |
| 19 | 159222 |
| 20 | 176421 |
| 21 | 194502 |
| 22 | 213465 |
| 23 | 233310 |
| 24 | 254037 |
| 25 | 275646 |
| 26 | 298137 |
| 27 | 321510 |
| 28 | 345765 |
| 29 | 370902 |
| 30 | 396921 |
| 31 | 423822 |
| 32 | 451605 |
| 33 | 480270 |
| 34 | 509817 |
| 35 | 540246 |