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 | 4 |
| 2 | 10 |
| 3 | 20 |
| 4 | 120 |
| 5 | 130 |
| 6 | 180 |
| 7 | 230 |
| 8 | 260 |
| 9 | 440 |
| 10 | 470 |
| 11 | 680 |
| 12 | 700 |
| 13 | 750 |
| 14 | 920 |
| 15 | 1060 |
| 16 | 1320 |
| 17 | 1736 |
| 18 | 1860 |
| 19 | 1970 |
| 20 | 2106 |
| 21 | 2320 |
| 22 | 2460 |
| 23 | 2760 |
| 24 | 2850 |
| 25 | 2890 |
| 26 | 3074 |
| 27 | 3660 |
| 28 | 3800 |
| 29 | 4180 |
| 30 | 4370 |
| 31 | 5030 |
| 32 | 5236 |
| 33 | 5304 |
| 34 | 5814 |
| 35 | 5990 |
| 36 | 6130 |
| 37 | 6350 |
| 38 | 6590 |
| 39 | 6724 |
| 40 | 6780 |
| 41 | 6990 |
| 42 | 7190 |
| 43 | 7384 |
| 44 | 7520 |
| 45 | 7744 |
| 46 | 8180 |