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) |
|---|---|
| 7 | 1 |
| 8 | 1 |
| 9 | 5 |
| 10 | 13 |
| 11 | 47 |
| 12 | 136 |
| 13 | 428 |
| 14 | 1252 |
| 15 | 3716 |
| 16 | 10708 |
| 17 | 30823 |
| 18 | 87504 |
| 19 | 247438 |
| 20 | 694588 |
| 21 | 1942866 |
| 22 | 5411640 |
| 23 | 15034045 |
| 24 | 41659417 |
| 25 | 115231598 |
| 26 | 318231047 |
| 27 | 877817312 |
| 28 | 2419033683 |
| 29 | 6661335192 |
| 30 | 18332784221 |
| 31 | 50432439047 |
| 32 | 138692804603 |
| 33 | 381332833730 |
| 34 | 1048322091176 |
| 35 | 2881742370070 |