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 | 70 |
| 2 | 120 |
| 3 | 170 |
| 4 | 220 |
| 5 | 270 |
| 6 | 320 |
| 7 | 370 |
| 8 | 420 |
| 9 | 470 |
| 10 | 520 |
| 11 | 570 |
| 12 | 620 |
| 13 | 670 |
| 14 | 720 |
| 15 | 770 |
| 16 | 820 |
| 17 | 870 |
| 18 | 920 |
| 19 | 970 |
| 20 | 1020 |
| 21 | 1070 |
| 22 | 1120 |
| 23 | 1170 |
| 24 | 1220 |
| 25 | 1270 |
| 26 | 1320 |
| 27 | 1370 |
| 28 | 1420 |
| 29 | 1470 |
| 30 | 1520 |
| 31 | 1570 |
| 32 | 1620 |
| 33 | 1670 |
| 34 | 1720 |
| 35 | 1770 |
| 36 | 1820 |
| 37 | 1870 |
| 38 | 1920 |
| 39 | 1970 |
| 40 | 2020 |
| 41 | 2070 |
| 42 | 2120 |
| 43 | 2170 |
| 44 | 2220 |
| 45 | 2270 |