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 | 90 |
| 2 | 315 |
| 3 | 1155 |
| 4 | 3003 |
| 5 | 7293 |
| 6 | 12597 |
| 7 | 22287 |
| 8 | 38019 |
| 9 | 62031 |
| 10 | 99789 |
| 11 | 141081 |
| 12 | 195693 |
| 13 | 248583 |
| 14 | 321339 |
| 15 | 146969 |
| 16 | 572241 |
| 17 | 723399 |
| 18 | 870531 |
| 19 | 1041783 |
| 20 | 1228371 |
| 21 | 1435983 |
| 22 | 1750719 |
| 23 | 2149617 |
| 24 | 2615799 |
| 25 | 3027273 |
| 26 | 3339363 |
| 27 | 3603867 |
| 28 | 3953757 |
| 29 | 4692777 |
| 30 | 5639943 |
| 31 | 6837807 |
| 32 | 7483899 |
| 33 | 8512221 |