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) |
|---|---|
| 1 | 21 |
| 2 | 56 |
| 3 | 285 |
| 4 | 483 |
| 5 | 783 |
| 6 | 999 |
| 7 | 1269 |
| 8 | 1593 |
| 9 | 1911 |
| 10 | 2613 |
| 11 | 3003 |
| 12 | 3596 |
| 13 | 3621 |
| 14 | 3740 |
| 15 | 4136 |
| 16 | 4233 |
| 17 | 4928 |
| 18 | 5096 |
| 19 | 5451 |
| 20 | 5828 |
| 21 | 5840 |
| 22 | 6320 |
| 23 | 7040 |
| 24 | 7280 |
| 25 | 8036 |
| 26 | 8468 |
| 27 | 9021 |
| 28 | 9296 |
| 29 | 9591 |
| 30 | 11660 |
| 31 | 12075 |
| 32 | 12573 |
| 33 | 12705 |
| 34 | 12920 |
| 35 | 12956 |
| 36 | 13563 |
| 37 | 14396 |
| 38 | 14595 |
| 39 | 15429 |
| 40 | 15561 |