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 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 22 |
| 7 | 33 |
| 8 | 64 |
| 9 | 88 |
| 10 | 174 |
| 11 | 232 |
| 12 | 462 |
| 13 | 609 |
| 14 | 1216 |
| 15 | 1596 |
| 16 | 3190 |
| 17 | 4180 |
| 18 | 8358 |
| 19 | 10945 |
| 20 | 21888 |
| 21 | 28656 |
| 22 | 57310 |
| 23 | 75024 |
| 24 | 150046 |
| 25 | 196417 |
| 26 | 392832 |
| 27 | 514228 |
| 28 | 1028454 |
| 29 | 1346268 |
| 30 | 2692534 |
| 31 | 3524577 |
| 32 | 7049152 |
| 33 | 9227464 |
| 34 | 18454926 |
| 35 | 24157816 |
| 36 | 48315630 |
| 37 | 63245985 |
| 38 | 126491968 |
| 39 | 165580140 |