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 | 1 |
| 1 | -1 |
| 2 | -2 |
| 3 | -1 |
| 4 | -4 |
| 5 | -10 |
| 6 | -13 |
| 7 | -17 |
| 8 | -20 |
| 9 | -16 |
| 10 | -21 |
| 11 | -46 |
| 12 | -77 |
| 13 | -99 |
| 14 | -97 |
| 15 | -81 |
| 16 | -101 |
| 17 | -172 |
| 18 | -265 |
| 19 | -376 |
| 20 | -499 |
| 21 | -595 |
| 22 | -666 |
| 23 | -806 |
| 24 | -1129 |
| 25 | -1639 |
| 26 | -2234 |
| 27 | -2871 |
| 28 | -3624 |
| 29 | -4615 |
| 30 | -6044 |
| 31 | -8177 |
| 32 | -11178 |
| 33 | -15063 |
| 34 | -19793 |
| 35 | -25444 |
| 36 | -32633 |
| 37 | -42751 |
| 38 | -57410 |
| 39 | -77712 |
| 40 | -104221 |
| 41 | -137679 |
| 42 | -180126 |
| 43 | -235775 |
| 44 | -311020 |
| 45 | -413748 |