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 | 29 |
| 3 | 150 |
| 4 | 390 |
| 5 | 750 |
| 6 | 1230 |
| 7 | 1830 |
| 8 | 2550 |
| 9 | 3390 |
| 10 | 4350 |
| 11 | 5430 |
| 12 | 6630 |
| 13 | 7950 |
| 14 | 9390 |
| 15 | 10950 |
| 16 | 12630 |
| 17 | 14430 |
| 18 | 16350 |
| 19 | 18390 |
| 20 | 20550 |
| 21 | 22830 |
| 22 | 25230 |
| 23 | 27750 |
| 24 | 30390 |
| 25 | 33150 |
| 26 | 36030 |
| 27 | 39030 |
| 28 | 42150 |
| 29 | 45390 |
| 30 | 48750 |
| 31 | 52230 |
| 32 | 55830 |
| 33 | 59550 |
| 34 | 63390 |
| 35 | 67350 |
| 36 | 71430 |
| 37 | 75630 |
| 38 | 79950 |
| 39 | 84390 |
| 40 | 88950 |