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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 4 |
| 9 | 13 |
| 10 | 38 |
| 11 | 99 |
| 12 | 240 |
| 13 | 565 |
| 14 | 1274 |
| 15 | 2799 |
| 16 | 6052 |
| 17 | 12857 |
| 18 | 26958 |
| 19 | 56099 |
| 20 | 115704 |
| 21 | 237133 |
| 22 | 484002 |
| 23 | 983543 |
| 24 | 1992012 |
| 25 | 4026017 |
| 26 | 8118262 |
| 27 | 16342347 |
| 28 | 32860832 |
| 29 | 65998837 |
| 30 | 132437322 |
| 31 | 265603743 |
| 32 | 532348916 |
| 33 | 1066505545 |
| 34 | 2135992990 |
| 35 | 4276649971 |
| 36 | 8560661832 |