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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 12 |
| 4 | 32 |
| 5 | 95 |
| 6 | 328 |
| 7 | 1294 |
| 8 | 5748 |
| 9 | 28152 |
| 10 | 149768 |
| 11 | 856130 |
| 12 | 5218107 |
| 13 | 33712600 |
| 14 | 229800588 |
| 15 | 1646316230 |
| 16 | 12355374717 |
| 17 | 96861192976 |
| 18 | 791258805462 |
| 19 | 6720627186126 |
| 20 | 59234364203973 |
| 21 | 540812222400025 |
| 22 | 5106663817693176 |
| 23 | 49798678281859244 |
| 24 | 500857393911224861 |