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 | -6 |
| 1 | 4 |
| 2 | 6 |
| 3 | 0 |
| 4 | 18 |
| 5 | 24 |
| 6 | 30 |
| 7 | 92 |
| 8 | 138 |
| 9 | 236 |
| 10 | 518 |
| 11 | 856 |
| 12 | 1570 |
| 13 | 3072 |
| 14 | 5374 |
| 15 | 9972 |
| 16 | 18714 |
| 17 | 33684 |
| 18 | 62406 |
| 19 | 115440 |
| 20 | 210482 |
| 21 | 388776 |
| 22 | 715934 |
| 23 | 1312460 |
| 24 | 2419114 |
| 25 | 4449532 |
| 26 | 8174406 |
| 27 | 15049672 |
| 28 | 27675714 |
| 29 | 50884368 |
| 30 | 93629694 |
| 31 | 172187364 |
| 32 | 316668474 |
| 33 | 582540836 |
| 34 | 1071371910 |
| 35 | 1970517728 |