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 | 4 |
| 1 | 9 |
| 2 | 21 |
| 3 | 40 |
| 4 | 74 |
| 5 | 125 |
| 6 | 209 |
| 7 | 330 |
| 8 | 515 |
| 9 | 778 |
| 10 | 1160 |
| 11 | 1690 |
| 12 | 2439 |
| 13 | 3457 |
| 14 | 4857 |
| 15 | 6735 |
| 16 | 9264 |
| 17 | 12607 |
| 18 | 17040 |
| 19 | 22826 |
| 20 | 30391 |
| 21 | 40165 |
| 22 | 52788 |
| 23 | 68938 |
| 24 | 89589 |
| 25 | 115778 |
| 26 | 148957 |
| 27 | 190714 |
| 28 | 243184 |
| 29 | 308746 |
| 30 | 390539 |
| 31 | 492071 |
| 32 | 617900 |
| 33 | 773175 |
| 34 | 964443 |
| 35 | 1199168 |
| 36 | 1486724 |
| 37 | 1837806 |