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 | 22 |
| 2 | 484 |
| 3 | 5913 |
| 4 | 49561 |
| 5 | 364959 |
| 6 | 2715255 |
| 7 | 21347949 |
| 8 | 176196273 |
| 9 | 1493319998 |
| 10 | 12752674920 |
| 11 | 108775648521 |
| 12 | 925164714995 |
| 13 | 7854870418554 |
| 14 | 66655562324108 |
| 15 | 565717490459602 |
| 16 | 4802772296256892 |
| 17 | 40782742978895315 |
| 18 | 346338434126201765 |