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) |
|---|---|
| 4 | 1 |
| 5 | 5 |
| 6 | 24 |
| 7 | 84 |
| 8 | 251 |
| 9 | 653 |
| 10 | 1543 |
| 11 | 3341 |
| 12 | 6763 |
| 13 | 12879 |
| 14 | 23446 |
| 15 | 40883 |
| 16 | 68757 |
| 17 | 111976 |
| 18 | 177358 |
| 19 | 273926 |
| 20 | 413784 |
| 21 | 612430 |
| 22 | 889959 |
| 23 | 1271709 |
| 24 | 1789841 |
| 25 | 2483779 |
| 26 | 3402623 |
| 27 | 4605954 |
| 28 | 6166614 |
| 29 | 8171174 |
| 30 | 10724604 |
| 31 | 13950011 |
| 32 | 17994136 |
| 33 | 23029141 |
| 34 | 29255902 |
| 35 | 36908235 |
| 36 | 46257694 |
| 37 | 57616522 |
| 38 | 71344257 |
| 39 | 87853381 |
| 40 | 107612397 |