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 | -3 |
| 3 | -4 |
| 4 | -15 |
| 5 | -6 |
| 6 | -63 |
| 7 | -18 |
| 8 | -364 |
| 9 | -42 |
| 10 | -400 |
| 11 | -60 |
| 12 | -4095 |
| 13 | -72 |
| 14 | -90 |
| 15 | -102 |
| 16 | -3906 |
| 17 | -132 |
| 18 | -168 |
| 19 | -2380 |
| 20 | -174 |
| 21 | -65535 |
| 22 | -5220 |
| 23 | -294 |
| 24 | -384 |
| 25 | -262143 |
| 26 | -12720 |
| 27 | -678 |
| 28 | -702 |
| 29 | -265720 |
| 30 | -744 |
| 31 | -762 |
| 32 | -774 |
| 33 | -828 |
| 34 | -840 |
| 35 | -25260 |
| 36 | -858 |
| 37 | -912 |
| 38 | -1092 |
| 39 | -1098 |
| 40 | -1164 |
| 41 | -1182 |
| 42 | -1194 |
| 43 | -1218 |
| 44 | -1374 |
| 45 | -1428 |
| 46 | -1488 |
| 47 | -1560 |