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 | 4 |
| 2 | 16 |
| 3 | 44 |
| 4 | 116 |
| 5 | 260 |
| 6 | 560 |
| 7 | 1100 |
| 8 | 2090 |
| 9 | 3740 |
| 10 | 6512 |
| 11 | 10868 |
| 12 | 17732 |
| 13 | 28028 |
| 14 | 43472 |
| 15 | 65780 |
| 16 | 97955 |
| 17 | 143000 |
| 18 | 205920 |
| 19 | 291720 |
| 20 | 408408 |
| 21 | 563992 |
| 22 | 770848 |
| 23 | 1041352 |
| 24 | 1394068 |
| 25 | 1847560 |
| 26 | 2428960 |
| 27 | 3165400 |
| 28 | 4095640 |
| 29 | 5258440 |
| 30 | 6708064 |
| 31 | 8498776 |
| 32 | 10705189 |
| 33 | 13401916 |
| 34 | 16689904 |