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 | 0 |
| 2 | 9465000000 |
| 3 | 9471736170 |
| 4 | 9500000000 |
| 5 | 9757536170 |
| 6 | 9965000000 |
| 7 | 9971736170 |
| 8 | 10000000000 |
| 9 | 19465000000 |
| 10 | 19471736170 |
| 11 | 19500000000 |
| 12 | 19757536170 |
| 13 | 19965000000 |
| 14 | 19971736170 |
| 15 | 20000000000 |
| 16 | 29465000000 |
| 17 | 29471736170 |