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 | 490 |
| 2 | 55930 |
| 3 | 98648 |
| 4 | 222560 |
| 5 | 396550 |
| 6 | 584988 |
| 7 | 838448 |
| 8 | 1173102 |
| 9 | 2345720 |
| 10 | 2855660 |
| 11 | 4150120 |
| 12 | 4781502 |
| 13 | 5557300 |
| 14 | 6072460 |
| 15 | 6115122 |
| 16 | 6688416 |
| 17 | 6715280 |
| 18 | 9390290 |
| 19 | 9486950 |
| 20 | 11691498 |
| 21 | 12704510 |
| 22 | 13331240 |
| 23 | 16035760 |
| 24 | 17325700 |
| 25 | 19377050 |
| 26 | 20055070 |
| 27 | 20859410 |
| 28 | 29651748 |
| 29 | 34516160 |
| 30 | 35040352 |