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 | 1 |
| 2 | 252 |
| 3 | 4653 |
| 4 | 31504 |
| 5 | 127905 |
| 6 | 384156 |
| 7 | 948157 |
| 8 | 2039808 |
| 9 | 3965409 |
| 10 | 7132060 |
| 11 | 12062061 |
| 12 | 19407312 |
| 13 | 29963713 |
| 14 | 44685564 |
| 15 | 64699965 |
| 16 | 91321216 |
| 17 | 126065217 |
| 18 | 170663868 |
| 19 | 227079469 |
| 20 | 297519120 |
| 21 | 384449121 |
| 22 | 490609372 |
| 23 | 619027773 |
| 24 | 773034624 |
| 25 | 956277025 |
| 26 | 1172733276 |