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 | 7 |
| 2 | 19 |
| 3 | 49 |
| 4 | 91 |
| 5 | 175 |
| 6 | 253 |
| 7 | 415 |
| 8 | 571 |
| 9 | 805 |
| 10 | 1033 |
| 11 | 1423 |
| 12 | 1723 |
| 13 | 2263 |
| 14 | 2713 |
| 15 | 3313 |
| 16 | 3913 |
| 17 | 4825 |
| 18 | 5491 |
| 19 | 6625 |
| 20 | 7513 |
| 21 | 8701 |
| 22 | 9811 |
| 23 | 11461 |
| 24 | 12637 |
| 25 | 14497 |
| 26 | 16045 |
| 27 | 18043 |
| 28 | 19807 |
| 29 | 22411 |
| 30 | 24163 |
| 31 | 27133 |
| 32 | 29485 |
| 33 | 32425 |
| 34 | 35065 |
| 35 | 38593 |
| 36 | 41221 |
| 37 | 45433 |
| 38 | 48727 |
| 39 | 52831 |