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 | -1 |
| 2 | -2 |
| 3 | -4 |
| 4 | -6 |
| 5 | -10 |
| 6 | -16 |
| 7 | -18 |
| 8 | -22 |
| 9 | -28 |
| 10 | -30 |
| 11 | -42 |
| 12 | -46 |
| 13 | -52 |
| 14 | -58 |
| 15 | -66 |
| 16 | -70 |
| 17 | -78 |
| 18 | -82 |
| 19 | -100 |
| 20 | -102 |
| 21 | -106 |
| 22 | -126 |
| 23 | -130 |
| 24 | -136 |
| 25 | -138 |
| 26 | -148 |
| 27 | -150 |
| 28 | -162 |
| 29 | -166 |
| 30 | -172 |
| 31 | -178 |
| 32 | -190 |
| 33 | -196 |
| 34 | -198 |
| 35 | -210 |
| 36 | -222 |
| 37 | -226 |
| 38 | -228 |
| 39 | -238 |
| 40 | -250 |
| 41 | -256 |
| 42 | -262 |
| 43 | -268 |
| 44 | -270 |
| 45 | -282 |
| 46 | -292 |
| 47 | -306 |