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 | 100 |
| 3 | 280 |
| 4 | 600 |
| 5 | 1100 |
| 6 | 1820 |
| 7 | 2800 |
| 8 | 4080 |
| 9 | 5700 |
| 10 | 7700 |
| 11 | 10120 |
| 12 | 13000 |
| 13 | 16380 |
| 14 | 20300 |
| 15 | 24800 |
| 16 | 29920 |
| 17 | 35700 |
| 18 | 42180 |
| 19 | 49400 |
| 20 | 57400 |
| 21 | 66220 |
| 22 | 75900 |
| 23 | 86480 |
| 24 | 98000 |
| 25 | 110500 |
| 26 | 124020 |
| 27 | 138600 |
| 28 | 154280 |
| 29 | 171100 |
| 30 | 189100 |
| 31 | 208320 |
| 32 | 228800 |
| 33 | 250580 |
| 34 | 273700 |