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 | 3 |
| 2 | 10 |
| 3 | 30 |
| 4 | 82 |
| 5 | 180 |
| 6 | 374 |
| 7 | 656 |
| 8 | 1126 |
| 9 | 1784 |
| 10 | 2726 |
| 11 | 3916 |
| 12 | 5582 |
| 13 | 7628 |
| 14 | 10354 |
| 15 | 13592 |
| 16 | 17542 |
| 17 | 22212 |
| 18 | 28042 |
| 19 | 34672 |
| 20 | 42762 |
| 21 | 51964 |
| 22 | 62614 |
| 23 | 74496 |
| 24 | 88510 |
| 25 | 104044 |
| 26 | 121914 |
| 27 | 141536 |
| 28 | 163666 |
| 29 | 187944 |
| 30 | 215638 |
| 31 | 245492 |
| 32 | 279262 |
| 33 | 316024 |
| 34 | 356458 |
| 35 | 399900 |
| 36 | 447614 |
| 37 | 498700 |
| 38 | 555354 |
| 39 | 615776 |
| 40 | 681286 |