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 | -1 |
| 2 | 2 |
| 3 | 23 |
| 4 | 101 |
| 5 | 311 |
| 6 | 776 |
| 7 | 1679 |
| 8 | 3275 |
| 9 | 5903 |
| 10 | 9998 |
| 11 | 16103 |
| 12 | 24881 |
| 13 | 37127 |
| 14 | 53780 |
| 15 | 75935 |
| 16 | 104855 |
| 17 | 141983 |
| 18 | 188954 |
| 19 | 247607 |
| 20 | 319997 |
| 21 | 408407 |
| 22 | 515360 |
| 23 | 643631 |
| 24 | 796259 |
| 25 | 976559 |
| 26 | 1188134 |
| 27 | 1434887 |
| 28 | 1721033 |
| 29 | 2051111 |
| 30 | 2429996 |
| 31 | 2862911 |
| 32 | 3355439 |
| 33 | 3913535 |
| 34 | 4543538 |
| 35 | 5252183 |
| 36 | 6046613 |
| 37 | 6934391 |