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 | 31 |
| 2 | 961 |
| 3 | 9515 |
| 4 | 105690 |
| 5 | 1414091 |
| 6 | 19685415 |
| 7 | 284247216 |
| 8 | 4151434555 |
| 9 | 61157761473 |
| 10 | 904153356114 |
| 11 | 13398763251407 |
| 12 | 198786170639419 |
| 13 | 2951352268541230 |
| 14 | 43835137032613613 |
| 15 | 651215738558433885 |
| 16 | 9675736244048801824 |