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 | 1 |
| 2 | 14 |
| 3 | 109 |
| 4 | 479 |
| 5 | 1570 |
| 6 | 4031 |
| 7 | 8997 |
| 8 | 17948 |
| 9 | 32853 |
| 10 | 56408 |
| 11 | 91776 |
| 12 | 143003 |
| 13 | 215196 |
| 14 | 313732 |
| 15 | 444813 |
| 16 | 616816 |
| 17 | 839685 |
| 18 | 1120435 |
| 19 | 1472736 |
| 20 | 1907995 |
| 21 | 2440463 |
| 22 | 3086644 |
| 23 | 3861599 |
| 24 | 4784197 |
| 25 | 5878808 |
| 26 | 7160841 |
| 27 | 8659826 |
| 28 | 10399512 |
| 29 | 12407231 |
| 30 | 14710254 |
| 31 | 17351756 |