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 | 3 |
| 2 | 313 |
| 3 | 94863 |
| 4 | 298327 |
| 5 | 987917 |
| 6 | 3162083 |
| 7 | 9893887 |
| 8 | 29983327 |
| 9 | 99477133 |
| 10 | 99483667 |
| 11 | 197483417 |
| 12 | 282753937 |
| 13 | 314623583 |
| 14 | 315432874 |
| 15 | 706399164 |
| 16 | 773303937 |
| 17 | 894303633 |
| 18 | 947047833 |
| 19 | 948675387 |
| 20 | 989938887 |
| 21 | 994927133 |
| 22 | 994987437 |
| 23 | 998398167 |
| 24 | 2428989417 |
| 25 | 2754991833 |
| 26 | 2983284917 |
| 27 | 2999833327 |