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 | 2 |
| 2 | 7 |
| 3 | 44 |
| 4 | 515 |
| 5 | 11500 |
| 6 | 493704 |
| 7 | 40751496 |
| 8 | 6463642330 |
| 9 | 1970190022696 |
| 10 | 1154437344815284 |
| 11 | 1300686960810345198 |
| 12 | 2818300749120970598426 |
| 13 | 11745284697899678209887246 |
| 14 | 94153940687296424300453605522 |
| 15 | 1451915619132744566900848537333082 |
| 16 | 43072062058620235613855525243039798546 |