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 | 5 |
| 2 | 21 |
| 3 | 69 |
| 4 | 188 |
| 5 | 444 |
| 6 | 944 |
| 7 | 1844 |
| 8 | 3369 |
| 9 | 5825 |
| 10 | 9621 |
| 11 | 15285 |
| 12 | 23492 |
| 13 | 35080 |
| 14 | 51084 |
| 15 | 72756 |
| 16 | 101601 |
| 17 | 139401 |
| 18 | 188257 |
| 19 | 250613 |
| 20 | 329304 |
| 21 | 427584 |
| 22 | 549176 |
| 23 | 698304 |
| 24 | 879749 |
| 25 | 1098881 |
| 26 | 1361721 |
| 27 | 1674977 |
| 28 | 2046108 |
| 29 | 2483364 |
| 30 | 2995856 |
| 31 | 3593596 |
| 32 | 4287573 |
| 33 | 5089797 |
| 34 | 6013377 |