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 | 5 |
| 3 | 19 |
| 4 | 11 |
| 5 | 23 |
| 6 | 61 |
| 7 | 137 |
| 8 | 229 |
| 9 | 599 |
| 10 | 1151 |
| 11 | 5953 |
| 12 | 101107 |
| 13 | 549149 |
| 14 | 16036673 |
| 15 | 28158577 |
| 16 | 468599149 |
| 17 | 63088004325217 |
| 18 | 3233514251032733 |
| 19 | 53815701950239487 |
| 20 | 14906561637522623977 |
| 21 | 248091402816751952399 |
| 22 | 1712077530466014390485776063 |