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 | 32 |
| 2 | 94 |
| 3 | 278 |
| 4 | 824 |
| 5 | 2446 |
| 6 | 7268 |
| 7 | 21612 |
| 8 | 64302 |
| 9 | 191406 |
| 10 | 569972 |
| 11 | 1697824 |
| 12 | 5058866 |
| 13 | 15077156 |
| 14 | 44944738 |
| 15 | 134005046 |
| 16 | 399611304 |
| 17 | 1191849678 |
| 18 | 3555217476 |
| 19 | 10606364688 |
| 20 | 31645944402 |
| 21 | 94431456984 |
| 22 | 281811640854 |
| 23 | 841088436306 |