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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 2 |
| 4 | 8 |
| 5 | 10 |
| 6 | 30 |
| 7 | 40 |
| 8 | 100 |
| 9 | 140 |
| 10 | 320 |
| 11 | 460 |
| 12 | 988 |
| 13 | 1448 |
| 14 | 2982 |
| 15 | 4430 |
| 16 | 8840 |
| 17 | 13270 |
| 18 | 25850 |
| 19 | 39120 |
| 20 | 74760 |
| 21 | 113880 |
| 22 | 214272 |
| 23 | 328152 |
| 24 | 609528 |
| 25 | 937680 |
| 26 | 1722890 |
| 27 | 2660570 |
| 28 | 4843400 |
| 29 | 7503970 |
| 30 | 13551510 |
| 31 | 21055480 |
| 32 | 37759468 |
| 33 | 58814948 |
| 34 | 104827712 |
| 35 | 163642660 |
| 36 | 290077780 |