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 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 8 |
| 7 | 18 |
| 8 | 39 |
| 9 | 86 |
| 10 | 188 |
| 11 | 406 |
| 12 | 865 |
| 13 | 1836 |
| 14 | 3874 |
| 15 | 8135 |
| 16 | 17003 |
| 17 | 35413 |
| 18 | 73516 |
| 19 | 152171 |
| 20 | 314151 |
| 21 | 647051 |
| 22 | 1329936 |
| 23 | 2728341 |
| 24 | 5587493 |
| 25 | 11424941 |
| 26 | 23327502 |
| 27 | 47567628 |
| 28 | 96879029 |
| 29 | 197090007 |
| 30 | 400546603 |
| 31 | 813258276 |
| 32 | 1649761070 |
| 33 | 3343936929 |
| 34 | 6772740076 |
| 35 | 13707639491 |