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 | 1 |
| 2 | 36 |
| 3 | 261 |
| 4 | 1408 |
| 5 | 3225 |
| 6 | 9396 |
| 7 | 17101 |
| 8 | 47104 |
| 9 | 76545 |
| 10 | 116100 |
| 11 | 162261 |
| 12 | 367488 |
| 13 | 373321 |
| 14 | 615636 |
| 15 | 841725 |
| 16 | 1638400 |
| 17 | 1424481 |
| 18 | 2755620 |
| 19 | 2482597 |
| 20 | 4540800 |
| 21 | 4463361 |
| 22 | 5841396 |
| 23 | 6447981 |
| 24 | 12294144 |
| 25 | 11640625 |
| 26 | 13439556 |
| 27 | 18954729 |
| 28 | 24078208 |
| 29 | 20534697 |
| 30 | 30302100 |