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 | 16 |
| 2 | 42 |
| 3 | 81 |
| 4 | 149 |
| 5 | 316 |
| 6 | 854 |
| 7 | 2195 |
| 8 | 5752 |
| 9 | 15565 |
| 10 | 41364 |
| 11 | 110930 |
| 12 | 299210 |
| 13 | 802420 |
| 14 | 2158664 |
| 15 | 5810654 |
| 16 | 15618316 |
| 17 | 42022876 |
| 18 | 113058411 |
| 19 | 304076748 |
| 20 | 818075794 |
| 21 | 2200737667 |
| 22 | 5919964491 |
| 23 | 15925927942 |
| 24 | 42842509441 |
| 25 | 115250505252 |
| 26 | 310041060554 |