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 | 1292 |
| 4 | 4168 |
| 5 | 11465 |
| 6 | 22960 |
| 7 | 50322 |
| 8 | 105370 |
| 9 | 214519 |
| 10 | 434467 |
| 11 | 859485 |
| 12 | 1700263 |
| 13 | 3341334 |
| 14 | 6498994 |
| 15 | 12653384 |
| 16 | 24514485 |
| 17 | 47342410 |
| 18 | 91409818 |
| 19 | 176001232 |
| 20 | 338633421 |
| 21 | 651272262 |
| 22 | 1250858298 |
| 23 | 2403095620 |
| 24 | 4614434368 |
| 25 | 8859453967 |
| 26 | 17015312734 |