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 | 4 |
| 1 | 5 |
| 2 | 11 |
| 3 | 16 |
| 4 | 40 |
| 5 | 59 |
| 6 | 149 |
| 7 | 220 |
| 8 | 556 |
| 9 | 821 |
| 10 | 2075 |
| 11 | 3064 |
| 12 | 7744 |
| 13 | 11435 |
| 14 | 28901 |
| 15 | 42676 |
| 16 | 107860 |
| 17 | 159269 |
| 18 | 402539 |
| 19 | 594400 |
| 20 | 1502296 |
| 21 | 2218331 |
| 22 | 5606645 |
| 23 | 8278924 |
| 24 | 20924284 |
| 25 | 30897365 |
| 26 | 78090491 |
| 27 | 115310536 |
| 28 | 291437680 |
| 29 | 430344779 |
| 30 | 1087660229 |
| 31 | 1606068580 |
| 32 | 4059203236 |
| 33 | 5993929541 |