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 | 113 |
| 3 | 113 |
| 4 | 113 |
| 5 | 1327 |
| 6 | 1327 |
| 7 | 15683 |
| 8 | 15683 |
| 9 | 248909 |
| 10 | 265621 |
| 11 | 492113 |
| 12 | 492113 |
| 13 | 3851459 |
| 14 | 7743233 |
| 15 | 18640103 |
| 16 | 18640103 |
| 17 | 18640103 |
| 18 | 435917249 |
| 19 | 435917249 |
| 20 | 435917249 |
| 21 | 649580171 |
| 22 | 649580171 |
| 23 | 19187736221 |
| 24 | 19187736221 |
| 25 | 19187736221 |
| 26 | 94746870541 |
| 27 | 94746870541 |
| 28 | 673420121333 |
| 29 | 1975675658371 |