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 | 145 |
| 3 | 1009 |
| 4 | 3745 |
| 5 | 10081 |
| 6 | 22321 |
| 7 | 43345 |
| 8 | 76609 |
| 9 | 126145 |
| 10 | 196561 |
| 11 | 293041 |
| 12 | 421345 |
| 13 | 587809 |
| 14 | 799345 |
| 15 | 1063441 |
| 16 | 1388161 |
| 17 | 1782145 |
| 18 | 2254609 |
| 19 | 2815345 |
| 20 | 3474721 |
| 21 | 4243681 |
| 22 | 5133745 |
| 23 | 6157009 |
| 24 | 7326145 |
| 25 | 8654401 |
| 26 | 10155601 |
| 27 | 11844145 |
| 28 | 13735009 |
| 29 | 15843745 |
| 30 | 18186481 |