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 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 12 |
| 4 | 16 |
| 5 | 5 |
| 6 | -33 |
| 7 | -103 |
| 8 | -203 |
| 9 | -333 |
| 10 | -505 |
| 11 | -743 |
| 12 | -1071 |
| 13 | -1500 |
| 14 | -2028 |
| 15 | -2655 |
| 16 | -3399 |
| 17 | -4296 |
| 18 | -5382 |
| 19 | -6674 |
| 20 | -8170 |
| 21 | -9870 |
| 22 | -11798 |
| 23 | -14002 |
| 24 | -16530 |
| 25 | -19405 |
| 26 | -22625 |
| 27 | -26190 |
| 28 | -30130 |
| 29 | -34505 |
| 30 | -39375 |
| 31 | -44769 |
| 32 | -50685 |
| 33 | -57123 |
| 34 | -64119 |
| 35 | -71745 |
| 36 | -80073 |
| 37 | -89138 |
| 38 | -98938 |
| 39 | -109473 |
| 40 | -120785 |
| 41 | -132958 |