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 | 21 |
| 2 | 120 |
| 3 | 404 |
| 4 | 1025 |
| 5 | 2181 |
| 6 | 4116 |
| 7 | 7120 |
| 8 | 11529 |
| 9 | 17725 |
| 10 | 26136 |
| 11 | 37236 |
| 12 | 51545 |
| 13 | 69629 |
| 14 | 92100 |
| 15 | 119616 |
| 16 | 152881 |
| 17 | 192645 |
| 18 | 239704 |
| 19 | 294900 |
| 20 | 359121 |
| 21 | 433301 |
| 22 | 518420 |
| 23 | 615504 |
| 24 | 725625 |
| 25 | 849901 |
| 26 | 989496 |
| 27 | 1145620 |
| 28 | 1319529 |
| 29 | 1512525 |
| 30 | 1725956 |
| 31 | 1961216 |
| 32 | 2219745 |