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 | 6 |
| 2 | 30 |
| 3 | 124 |
| 4 | 368 |
| 5 | 926 |
| 6 | 2214 |
| 7 | 4181 |
| 8 | 8043 |
| 9 | 13818 |
| 10 | 23614 |
| 11 | 34825 |
| 12 | 54011 |
| 13 | 84026 |
| 14 | 109870 |
| 15 | 156474 |
| 16 | 217790 |
| 17 | 304910 |
| 18 | 376260 |
| 19 | 510220 |
| 20 | 667130 |
| 21 | 794873 |
| 22 | 1008048 |
| 23 | 1302947 |
| 24 | 1629264 |
| 25 | 1916949 |
| 26 | 2361150 |
| 27 | 2859694 |
| 28 | 3467661 |
| 29 | 3989744 |
| 30 | 4779270 |
| 31 | 5479857 |
| 32 | 6449983 |
| 33 | 7575912 |