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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 5 |
| 7 | 6 |
| 8 | 19 |
| 9 | 25 |
| 10 | 64 |
| 11 | 90 |
| 12 | 208 |
| 13 | 301 |
| 14 | 656 |
| 15 | 966 |
| 16 | 2035 |
| 17 | 3025 |
| 18 | 6250 |
| 19 | 9330 |
| 20 | 19035 |
| 21 | 28501 |
| 22 | 57740 |
| 23 | 86526 |
| 24 | 174436 |
| 25 | 261625 |
| 26 | 525994 |
| 27 | 788970 |
| 28 | 1583119 |
| 29 | 2375101 |
| 30 | 4760516 |
| 31 | 7141686 |
| 32 | 14303011 |
| 33 | 21457825 |
| 34 | 42954850 |
| 35 | 64439010 |
| 36 | 128953341 |
| 37 | 193448101 |
| 38 | 387046700 |
| 39 | 580606446 |
| 40 | 1161504423 |