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 | 23 |
| 2 | 3120613883 |
| 3 | 6241227743 |
| 4 | 9361841603 |
| 5 | 12482455463 |
| 6 | 15603069323 |
| 7 | 18723683183 |
| 8 | 21844297043 |
| 9 | 24964910903 |
| 10 | 28085524763 |
| 11 | 34326752483 |
| 12 | 43688594063 |
| 13 | 62412277223 |
| 14 | 115462712843 |
| 15 | 124824554423 |
| 16 | 156030693023 |
| 17 | 159151306883 |
| 18 | 171633762323 |
| 19 | 180995603903 |
| 20 | 196598673203 |