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 | 50 |
| 4 | 130 |
| 5 | 296 |
| 6 | 610 |
| 7 | 1163 |
| 8 | 2083 |
| 9 | 3544 |
| 10 | 5776 |
| 11 | 9076 |
| 12 | 13820 |
| 13 | 20476 |
| 14 | 29618 |
| 15 | 41941 |
| 16 | 58277 |
| 17 | 79612 |
| 18 | 107104 |
| 19 | 142102 |
| 20 | 186166 |
| 21 | 241088 |
| 22 | 308914 |
| 23 | 391967 |
| 24 | 492871 |
| 25 | 614576 |
| 26 | 760384 |
| 27 | 933976 |
| 28 | 1139440 |
| 29 | 1381300 |
| 30 | 1664546 |
| 31 | 1994665 |
| 32 | 2377673 |
| 33 | 2820148 |
| 34 | 3329264 |