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 | 9 |
| 3 | 20 |
| 4 | 42 |
| 5 | 80 |
| 6 | 147 |
| 7 | 260 |
| 8 | 445 |
| 9 | 744 |
| 10 | 1215 |
| 11 | 1944 |
| 12 | 3059 |
| 13 | 4740 |
| 14 | 7239 |
| 15 | 10920 |
| 16 | 16286 |
| 17 | 24028 |
| 18 | 35110 |
| 19 | 50844 |
| 20 | 73010 |
| 21 | 104028 |
| 22 | 147144 |
| 23 | 206700 |
| 24 | 288501 |
| 25 | 400232 |
| 26 | 552037 |
| 27 | 757288 |
| 28 | 1033495 |
| 29 | 1403508 |
| 30 | 1897088 |
| 31 | 2552812 |
| 32 | 3420527 |
| 33 | 4564500 |
| 34 | 6067265 |