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 | 7 |
| 2 | 49 |
| 3 | 232 |
| 4 | 824 |
| 5 | 2388 |
| 6 | 5992 |
| 7 | 13582 |
| 8 | 28642 |
| 9 | 57306 |
| 10 | 110164 |
| 11 | 205131 |
| 12 | 371923 |
| 13 | 658926 |
| 14 | 1143584 |
| 15 | 1947904 |
| 16 | 3261320 |
| 17 | 5374024 |
| 18 | 8725020 |
| 19 | 13970658 |
| 20 | 22081342 |
| 21 | 34476575 |
| 22 | 53211615 |
| 23 | 81232894 |
| 24 | 122724138 |
| 25 | 183570978 |
| 26 | 271978936 |
| 27 | 399288201 |
| 28 | 581038793 |
| 29 | 838351784 |
| 30 | 1199706462 |
| 31 | 1703209968 |