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 | 7 |
| 2 | 34 |
| 3 | 119 |
| 4 | 363 |
| 5 | 1064 |
| 6 | 3107 |
| 7 | 9125 |
| 8 | 26928 |
| 9 | 79800 |
| 10 | 237348 |
| 11 | 708163 |
| 12 | 2118654 |
| 13 | 6353180 |
| 14 | 19088180 |
| 15 | 57442255 |
| 16 | 173085671 |
| 17 | 522085599 |
| 18 | 1576088206 |
| 19 | 4761041486 |
| 20 | 14389487483 |
| 21 | 43507313943 |
| 22 | 131587493711 |
| 23 | 398081815019 |
| 24 | 1204514245101 |
| 25 | 3645147239577 |