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 | 1 |
| 4 | 31 |
| 5 | 211 |
| 6 | 782 |
| 7 | 2132 |
| 8 | 4862 |
| 9 | 9813 |
| 10 | 18093 |
| 11 | 31143 |
| 12 | 50764 |
| 13 | 79144 |
| 14 | 118924 |
| 15 | 173225 |
| 16 | 245675 |
| 17 | 340475 |
| 18 | 462426 |
| 19 | 616956 |
| 20 | 810186 |
| 21 | 1048957 |
| 22 | 1340857 |
| 23 | 1694287 |
| 24 | 2118488 |
| 25 | 2623568 |
| 26 | 3220568 |
| 27 | 3921489 |
| 28 | 4739319 |
| 29 | 5688099 |
| 30 | 6782950 |
| 31 | 8040100 |
| 32 | 9476950 |