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 | 13 |
| 2 | 37 |
| 3 | 151 |
| 4 | 393 |
| 5 | 1453 |
| 6 | 2367 |
| 7 | 5203 |
| 8 | 7221 |
| 9 | 12697 |
| 10 | 25231 |
| 11 | 30753 |
| 12 | 52023 |
| 13 | 70603 |
| 14 | 81357 |
| 15 | 106033 |
| 16 | 151687 |
| 17 | 208861 |
| 18 | 230703 |
| 19 | 305253 |
| 20 | 362953 |
| 21 | 394347 |
| 22 | 499281 |
| 23 | 578677 |
| 24 | 712891 |
| 25 | 922083 |
| 26 | 1040503 |
| 27 | 1103337 |
| 28 | 1236493 |
| 29 | 1306911 |
| 30 | 1455667 |
| 31 | 2064513 |
| 32 | 2265253 |
| 33 | 2590123 |
| 34 | 2704941 |
| 35 | 3330151 |
| 36 | 3465753 |
| 37 | 3894543 |
| 38 | 4357317 |
| 39 | 4685353 |
| 40 | 5207647 |
| 41 | 5767381 |