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 | 0 |
| 1 | 4 |
| 2 | 56 |
| 3 | 340 |
| 4 | 1120 |
| 5 | 3264 |
| 6 | 6264 |
| 7 | 13968 |
| 8 | 22904 |
| 9 | 38748 |
| 10 | 58256 |
| 11 | 95656 |
| 12 | 120960 |
| 13 | 192636 |
| 14 | 246824 |
| 15 | 323560 |
| 16 | 425408 |
| 17 | 587964 |
| 18 | 682296 |
| 19 | 932996 |
| 20 | 1061232 |
| 21 | 1327524 |
| 22 | 1634488 |
| 23 | 2049704 |
| 24 | 2227672 |
| 25 | 2806036 |
| 26 | 3275800 |
| 27 | 3810088 |
| 28 | 4307520 |
| 29 | 5298768 |
| 30 | 5577096 |
| 31 | 6958848 |
| 32 | 7586496 |
| 33 | 8672520 |
| 34 | 9901352 |