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 | 20 |
| 1 | 210 |
| 2 | 400 |
| 3 | 590 |
| 4 | 780 |
| 5 | 970 |
| 6 | 1160 |
| 7 | 1350 |
| 8 | 1540 |
| 9 | 1730 |
| 10 | 1920 |
| 11 | 2110 |
| 12 | 2300 |
| 13 | 2490 |
| 14 | 2680 |
| 15 | 2870 |
| 16 | 3060 |
| 17 | 3250 |
| 18 | 3440 |
| 19 | 3630 |
| 20 | 3820 |
| 21 | 4010 |
| 22 | 4200 |
| 23 | 4390 |
| 24 | 4580 |
| 25 | 4770 |
| 26 | 4960 |
| 27 | 5150 |
| 28 | 5340 |
| 29 | 5530 |
| 30 | 5720 |
| 31 | 5910 |
| 32 | 6100 |
| 33 | 6290 |
| 34 | 6480 |
| 35 | 6670 |
| 36 | 6860 |
| 37 | 7050 |
| 38 | 7240 |
| 39 | 7430 |