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 | 2257 |
| 2 | 2849 |
| 3 | 21941 |
| 4 | 27713 |
| 5 | 604765 |
| 6 | 763865 |
| 7 | 16669573 |
| 8 | 21054961 |
| 9 | 162316669 |
| 10 | 205018517 |
| 11 | 4474051285 |
| 12 | 5651073085 |
| 13 | 123321498797 |
| 14 | 155764598629 |
| 15 | 1200818695321 |
| 16 | 1516726961053 |
| 17 | 33099030801665 |
| 18 | 41806637918965 |
| 19 | 912332431430633 |
| 20 | 1152346479602381 |
| 21 | 8883656545668089 |