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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 8 |
| 11 | 29 |
| 12 | 71 |
| 13 | 148 |
| 14 | 302 |
| 15 | 596 |
| 16 | 1101 |
| 17 | 1915 |
| 18 | 3485 |
| 19 | 8991 |
| 20 | 32879 |
| 21 | 131942 |
| 22 | 595068 |
| 23 | 2731434 |
| 24 | 11077722 |
| 25 | 38438377 |
| 26 | 117144042 |
| 27 | 324706536 |
| 28 | 842734665 |
| 29 | 2087025088 |
| 30 | 4995608093 |
| 31 | 11799404719 |
| 32 | 28899101722 |
| 33 | 79974175125 |
| 34 | 268545121874 |
| 35 | 1071998634063 |