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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 23 |
| 4 | 53 |
| 5 | 977 |
| 6 | 2007 |
| 7 | 6998 |
| 8 | 23001 |
| 9 | 53000 |
| 10 | 977001 |
| 11 | 2007002 |
| 12 | 6998007 |
| 13 | 23001023 |
| 14 | 53000053 |
| 15 | 977001977 |
| 16 | 2007004007 |
| 17 | 6998013998 |
| 18 | 23001046001 |
| 19 | 53000106000 |
| 20 | 977002954001 |
| 21 | 2007006014002 |
| 22 | 6998020996007 |
| 23 | 23001069002023 |
| 24 | 53000159000053 |
| 25 | 977003931002977 |