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 | 2 |
| 2 | 4 |
| 3 | 11 |
| 4 | 28 |
| 5 | 37 |
| 6 | 67 |
| 7 | 149 |
| 8 | 284 |
| 9 | 596 |
| 10 | 1179 |
| 11 | 2444 |
| 12 | 5023 |
| 13 | 10103 |
| 14 | 20577 |
| 15 | 41746 |
| 16 | 84860 |
| 17 | 172501 |
| 18 | 350392 |
| 19 | 712597 |
| 20 | 1448463 |
| 21 | 2943959 |
| 22 | 5983960 |
| 23 | 12162310 |
| 24 | 24721031 |
| 25 | 50246512 |
| 26 | 102128407 |
| 27 | 207584129 |
| 28 | 421927877 |
| 29 | 857596064 |
| 30 | 1743119352 |
| 31 | 3543000201 |
| 32 | 7201377180 |
| 33 | 14637255611 |