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) |
|---|---|
| 0 | 2 |
| 1 | 6 |
| 2 | 10 |
| 3 | 26 |
| 4 | 30 |
| 5 | 50 |
| 6 | 126 |
| 7 | 130 |
| 8 | 150 |
| 9 | 250 |
| 10 | 626 |
| 11 | 630 |
| 12 | 650 |
| 13 | 750 |
| 14 | 1250 |
| 15 | 3126 |
| 16 | 3130 |
| 17 | 3150 |
| 18 | 3250 |
| 19 | 3750 |
| 20 | 6250 |
| 21 | 15626 |
| 22 | 15630 |
| 23 | 15650 |
| 24 | 15750 |
| 25 | 16250 |
| 26 | 18750 |
| 27 | 31250 |
| 28 | 78126 |
| 29 | 78130 |
| 30 | 78150 |
| 31 | 78250 |
| 32 | 78750 |
| 33 | 81250 |
| 34 | 93750 |
| 35 | 156250 |
| 36 | 390626 |
| 37 | 390630 |
| 38 | 390650 |
| 39 | 390750 |
| 40 | 391250 |
| 41 | 393750 |
| 42 | 406250 |
| 43 | 468750 |
| 44 | 781250 |