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 | 6 |
| 3 | 52 |
| 4 | 228 |
| 5 | 708 |
| 6 | 1778 |
| 7 | 3864 |
| 8 | 7560 |
| 9 | 13656 |
| 10 | 23166 |
| 11 | 37356 |
| 12 | 57772 |
| 13 | 86268 |
| 14 | 125034 |
| 15 | 176624 |
| 16 | 243984 |
| 17 | 330480 |
| 18 | 439926 |
| 19 | 576612 |
| 20 | 745332 |
| 21 | 951412 |
| 22 | 1200738 |
| 23 | 1499784 |
| 24 | 1855640 |
| 25 | 2276040 |
| 26 | 2769390 |
| 27 | 3344796 |
| 28 | 4012092 |
| 29 | 4781868 |
| 30 | 5665498 |
| 31 | 6675168 |
| 32 | 7823904 |
| 33 | 9125600 |
| 34 | 10595046 |