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 | -1 |
| 2 | 2 |
| 3 | 15 |
| 4 | 44 |
| 5 | 95 |
| 6 | 174 |
| 7 | 287 |
| 8 | 440 |
| 9 | 639 |
| 10 | 890 |
| 11 | 1199 |
| 12 | 1572 |
| 13 | 2015 |
| 14 | 2534 |
| 15 | 3135 |
| 16 | 3824 |
| 17 | 4607 |
| 18 | 5490 |
| 19 | 6479 |
| 20 | 7580 |
| 21 | 8799 |
| 22 | 10142 |
| 23 | 11615 |
| 24 | 13224 |
| 25 | 14975 |
| 26 | 16874 |
| 27 | 18927 |
| 28 | 21140 |
| 29 | 23519 |
| 30 | 26070 |
| 31 | 28799 |
| 32 | 31712 |
| 33 | 34815 |
| 34 | 38114 |
| 35 | 41615 |
| 36 | 45324 |
| 37 | 49247 |
| 38 | 53390 |
| 39 | 57759 |
| 40 | 62360 |