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 | 3 |
| 2 | 12 |
| 3 | 28 |
| 4 | 63 |
| 5 | 112 |
| 6 | 278 |
| 7 | 1112 |
| 8 | 2778 |
| 9 | 11112 |
| 10 | 27778 |
| 11 | 111112 |
| 12 | 277778 |
| 13 | 1111112 |
| 14 | 2777778 |
| 15 | 4938272 |
| 16 | 7716050 |
| 17 | 11111112 |
| 18 | 12802888 |
| 19 | 13151250 |
| 20 | 13504288 |
| 21 | 13862002 |
| 22 | 14224392 |
| 23 | 14591458 |
| 24 | 14963200 |
| 25 | 15339618 |
| 26 | 15720712 |
| 27 | 16106482 |
| 28 | 16496928 |
| 29 | 16892050 |
| 30 | 17291848 |
| 31 | 17696322 |
| 32 | 18105472 |