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 | 18 |
| 2 | 60 |
| 3 | 138 |
| 4 | 150 |
| 5 | 1278 |
| 6 | 1620 |
| 7 | 2730 |
| 8 | 4128 |
| 9 | 6360 |
| 10 | 11718 |
| 11 | 13398 |
| 12 | 17490 |
| 13 | 20808 |
| 14 | 23028 |
| 15 | 28308 |
| 16 | 29670 |
| 17 | 51870 |
| 18 | 61380 |
| 19 | 69828 |
| 20 | 73848 |
| 21 | 78540 |
| 22 | 92568 |
| 23 | 97500 |
| 24 | 115770 |
| 25 | 138570 |
| 26 | 166668 |
| 27 | 176610 |
| 28 | 193380 |
| 29 | 200928 |
| 30 | 258318 |
| 31 | 304980 |
| 32 | 430008 |
| 33 | 500910 |
| 34 | 518760 |
| 35 | 536190 |