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 | 25 |
| 2 | 625 |
| 3 | 1704 |
| 4 | 12292 |
| 5 | 71344 |
| 6 | 388134 |
| 7 | 2367656 |
| 8 | 13950908 |
| 9 | 79860282 |
| 10 | 473919476 |
| 11 | 2786796897 |
| 12 | 16214534579 |
| 13 | 95457905658 |
| 14 | 560591392760 |
| 15 | 3278996579419 |
| 16 | 19256876712615 |
| 17 | 113017014575263 |
| 18 | 662243340003005 |
| 19 | 3886173014048250 |