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 | 20 |
| 2 | 68 |
| 3 | 148 |
| 4 | 260 |
| 5 | 404 |
| 6 | 580 |
| 7 | 788 |
| 8 | 1028 |
| 9 | 1300 |
| 10 | 1604 |
| 11 | 1940 |
| 12 | 2308 |
| 13 | 2708 |
| 14 | 3140 |
| 15 | 3604 |
| 16 | 4100 |
| 17 | 4628 |
| 18 | 5188 |
| 19 | 5780 |
| 20 | 6404 |
| 21 | 7060 |
| 22 | 7748 |
| 23 | 8468 |
| 24 | 9220 |
| 25 | 10004 |
| 26 | 10820 |
| 27 | 11668 |
| 28 | 12548 |
| 29 | 13460 |
| 30 | 14404 |
| 31 | 15380 |
| 32 | 16388 |
| 33 | 17428 |
| 34 | 18500 |
| 35 | 19604 |
| 36 | 20740 |
| 37 | 21908 |
| 38 | 23108 |
| 39 | 24340 |
| 40 | 25604 |
| 41 | 26900 |
| 42 | 28228 |