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 | 30 |
| 2 | 50 |
| 3 | 170 |
| 4 | 370 |
| 5 | 590 |
| 6 | 610 |
| 7 | 730 |
| 8 | 1370 |
| 9 | 1390 |
| 10 | 1910 |
| 11 | 1990 |
| 12 | 2290 |
| 13 | 3310 |
| 14 | 3730 |
| 15 | 4010 |
| 16 | 4990 |
| 17 | 5410 |
| 18 | 6070 |
| 19 | 6590 |
| 20 | 7190 |
| 21 | 7870 |
| 22 | 8770 |
| 23 | 9470 |
| 24 | 9970 |
| 25 | 10610 |
| 26 | 11090 |
| 27 | 11810 |
| 28 | 11930 |
| 29 | 12970 |
| 30 | 14470 |
| 31 | 15230 |
| 32 | 15310 |
| 33 | 16270 |
| 34 | 16570 |
| 35 | 16990 |
| 36 | 17330 |
| 37 | 18790 |
| 38 | 19130 |
| 39 | 20110 |