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 | 10 |
| 2 | 100 |
| 3 | 144 |
| 4 | 324 |
| 5 | 650 |
| 6 | 1406 |
| 7 | 3024 |
| 8 | 6150 |
| 9 | 13560 |
| 10 | 28688 |
| 11 | 59598 |
| 12 | 128520 |
| 13 | 274230 |
| 14 | 576520 |
| 15 | 1218560 |
| 16 | 2621232 |
| 17 | 5546520 |
| 18 | 11635076 |
| 19 | 24984990 |
| 20 | 53176014 |
| 21 | 111623072 |
| 22 | 237955858 |
| 23 | 508611568 |
| 24 | 1072136960 |
| 25 | 2270141058 |
| 26 | 4856035380 |
| 27 | 10288291950 |