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 | 13 |
| 2 | 4133 |
| 3 | 1831343 |
| 4 | 2320583 |
| 5 | 3828673 |
| 6 | 9173893 |
| 7 | 23658377 |
| 8 | 24037537 |
| 9 | 42489677 |
| 10 | 56253203 |
| 11 | 78222863 |
| 12 | 96325093 |
| 13 | 99846337 |
| 14 | 110453773 |
| 15 | 110468653 |
| 16 | 117748427 |
| 17 | 122173187 |
| 18 | 130937467 |
| 19 | 138072163 |
| 20 | 146981537 |
| 21 | 174978913 |
| 22 | 184050553 |
| 23 | 186927817 |