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 | 169 |
| 3 | 336 |
| 4 | 824 |
| 5 | 1648 |
| 6 | 4160 |
| 7 | 8892 |
| 8 | 19710 |
| 9 | 44868 |
| 10 | 100056 |
| 11 | 224792 |
| 12 | 497348 |
| 13 | 1123364 |
| 14 | 2520128 |
| 15 | 5603808 |
| 16 | 12569064 |
| 17 | 28201200 |
| 18 | 63082040 |
| 19 | 140941364 |
| 20 | 315874560 |
| 21 | 707891088 |
| 22 | 1582568420 |
| 23 | 3541951148 |
| 24 | 7935579276 |
| 25 | 17763012916 |
| 26 | 39742042856 |