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 | 20 |
| 2 | 136 |
| 3 | 444 |
| 4 | 1040 |
| 5 | 2020 |
| 6 | 3480 |
| 7 | 5516 |
| 8 | 8224 |
| 9 | 11700 |
| 10 | 16040 |
| 11 | 21340 |
| 12 | 27696 |
| 13 | 35204 |
| 14 | 43960 |
| 15 | 54060 |
| 16 | 65600 |
| 17 | 78676 |
| 18 | 93384 |
| 19 | 109820 |
| 20 | 128080 |
| 21 | 148260 |
| 22 | 170456 |
| 23 | 194764 |
| 24 | 221280 |
| 25 | 250100 |
| 26 | 281320 |
| 27 | 315036 |
| 28 | 351344 |
| 29 | 390340 |
| 30 | 432120 |
| 31 | 476780 |
| 32 | 524416 |
| 33 | 575124 |
| 34 | 629000 |
| 35 | 686140 |
| 36 | 746640 |