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 | 3 |
| 4 | 9 |
| 5 | 15 |
| 6 | 37 |
| 7 | 47 |
| 8 | 117 |
| 9 | 327 |
| 10 | 957 |
| 11 | 2847 |
| 12 | 8517 |
| 13 | 25527 |
| 14 | 33129 |
| 15 | 33291 |
| 16 | 46653 |
| 17 | 66855 |
| 18 | 147661 |
| 19 | 161689 |
| 20 | 218691 |
| 21 | 503481 |
| 22 | 629673 |
| 23 | 919347 |
| 24 | 2076921 |
| 25 | 3007455 |
| 26 | 7100533 |
| 27 | 7931517 |
| 28 | 9022563 |
| 29 | 9100641 |
| 30 | 11272057 |
| 31 | 11437383 |
| 32 | 15080379 |
| 33 | 32539617 |
| 34 | 37443597 |
| 35 | 37821775 |
| 36 | 53419727 |