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 | 1 |
| 2 | 6 |
| 3 | 26 |
| 4 | 78 |
| 5 | 195 |
| 6 | 420 |
| 7 | 820 |
| 8 | 1476 |
| 9 | 2501 |
| 10 | 4026 |
| 11 | 6222 |
| 12 | 9282 |
| 13 | 13447 |
| 14 | 18984 |
| 15 | 26216 |
| 16 | 35496 |
| 17 | 47241 |
| 18 | 61902 |
| 19 | 80002 |
| 20 | 102102 |
| 21 | 128843 |
| 22 | 160908 |
| 23 | 199068 |
| 24 | 244140 |
| 25 | 297037 |
| 26 | 358722 |
| 27 | 430262 |
| 28 | 512778 |
| 29 | 607503 |
| 30 | 715728 |
| 31 | 838864 |
| 32 | 978384 |
| 33 | 1135889 |
| 34 | 1313046 |
| 35 | 1511658 |
| 36 | 1733598 |
| 37 | 1980883 |
| 38 | 2255604 |