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) |
|---|---|
| 3 | 6 |
| 4 | 40 |
| 5 | 155 |
| 6 | 456 |
| 7 | 1128 |
| 8 | 2472 |
| 9 | 4950 |
| 10 | 9240 |
| 11 | 16302 |
| 12 | 27456 |
| 13 | 44473 |
| 14 | 69680 |
| 15 | 106080 |
| 16 | 157488 |
| 17 | 228684 |
| 18 | 325584 |
| 19 | 455430 |
| 20 | 627000 |
| 21 | 850839 |
| 22 | 1139512 |
| 23 | 1507880 |
| 24 | 1973400 |
| 25 | 2556450 |
| 26 | 3280680 |
| 27 | 4173390 |
| 28 | 5265936 |
| 29 | 6594165 |
| 30 | 8198880 |
| 31 | 10126336 |
| 32 | 12428768 |
| 33 | 15164952 |
| 34 | 18400800 |
| 35 | 22209990 |