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 | 16 |
| 2 | 338 |
| 3 | 5183 |
| 4 | 69837 |
| 5 | 878377 |
| 6 | 10583772 |
| 7 | 123837722 |
| 8 | 1418377223 |
| 9 | 15983772233 |
| 10 | 177837722339 |
| 11 | 1958377223398 |
| 12 | 21383772233983 |
| 13 | 231837722339831 |
| 14 | 2498377223398316 |
| 15 | 26783772233983162 |
| 16 | 285837722339831620 |
| 17 | 3038377223398316206 |
| 18 | 32183772233983162066 |
| 19 | 339837722339831620668 |
| 20 | 3578377223398316206680 |