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 | 17 |
| 2 | 225 |
| 3 | 2673 |
| 4 | 29889 |
| 5 | 321489 |
| 6 | 3365793 |
| 7 | 34543665 |
| 8 | 349156737 |
| 9 | 3486784401 |
| 10 | 34480423521 |
| 11 | 338218086897 |
| 12 | 3295011258945 |
| 13 | 31914537622353 |
| 14 | 307565765227809 |
| 15 | 2951106226689969 |
| 16 | 28207085096966913 |
| 17 | 268687927383516945 |