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 | 6 |
| 3 | 17 |
| 4 | 40 |
| 5 | 75 |
| 6 | 130 |
| 7 | 203 |
| 8 | 304 |
| 9 | 429 |
| 10 | 590 |
| 11 | 781 |
| 12 | 1016 |
| 13 | 1287 |
| 14 | 1610 |
| 15 | 1975 |
| 16 | 2400 |
| 17 | 2873 |
| 18 | 3414 |
| 19 | 4009 |
| 20 | 4680 |
| 21 | 5411 |
| 22 | 6226 |
| 23 | 7107 |
| 24 | 8080 |
| 25 | 9125 |
| 26 | 10270 |
| 27 | 11493 |
| 28 | 12824 |
| 29 | 14239 |
| 30 | 15770 |
| 31 | 17391 |
| 32 | 19136 |
| 33 | 20977 |
| 34 | 22950 |
| 35 | 25025 |
| 36 | 27240 |
| 37 | 29563 |
| 38 | 32034 |
| 39 | 34619 |
| 40 | 37360 |
| 41 | 40221 |