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 | 4 |
| 2 | 16 |
| 3 | 50 |
| 4 | 132 |
| 5 | 315 |
| 6 | 689 |
| 7 | 1413 |
| 8 | 2636 |
| 9 | 4967 |
| 10 | 8563 |
| 11 | 14481 |
| 12 | 23593 |
| 13 | 37127 |
| 14 | 56809 |
| 15 | 86779 |
| 16 | 127096 |
| 17 | 184517 |
| 18 | 264288 |
| 19 | 368794 |
| 20 | 510442 |
| 21 | 707483 |
| 22 | 948307 |
| 23 | 1268871 |
| 24 | 1689642 |
| 25 | 2204795 |
| 26 | 2866855 |
| 27 | 3729223 |
| 28 | 4738019 |
| 29 | 6013021 |
| 30 | 7619227 |
| 31 | 9510372 |
| 32 | 11832748 |
| 33 | 14770667 |
| 34 | 18067652 |