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 | 11 |
| 2 | 22 |
| 3 | 44 |
| 4 | 55 |
| 5 | 110 |
| 6 | 220 |
| 7 | 440 |
| 8 | 880 |
| 9 | 1006003 |
| 10 | 2012006 |
| 11 | 4024012 |
| 12 | 11066033 |
| 13 | 22132066 |
| 14 | 44264132 |
| 15 | 55330165 |
| 16 | 88528264 |
| 17 | 110660330 |
| 18 | 221320660 |
| 19 | 442641320 |
| 20 | 885282640 |
| 21 | 1770565280 |
| 22 | 56224501667 |
| 23 | 112449003334 |
| 24 | 224898006668 |
| 25 | 393571511669 |
| 26 | 449796013336 |
| 27 | 618469518337 |
| 28 | 787143023338 |