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 | 6 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 21 |
| 6 | 9 |
| 7 | -13 |
| 8 | -64 |
| 9 | -57 |
| 10 | -73 |
| 11 | -161 |
| 12 | -192 |
| 13 | -412 |
| 14 | -697 |
| 15 | -855 |
| 16 | -935 |
| 17 | -1272 |
| 18 | -1702 |
| 19 | -2063 |
| 20 | -2754 |
| 21 | -3439 |
| 22 | -4031 |
| 23 | -4714 |
| 24 | -5120 |
| 25 | -5750 |
| 26 | -7098 |
| 27 | -8586 |
| 28 | -10201 |
| 29 | -11989 |
| 30 | -12545 |
| 31 | -13055 |
| 32 | -14716 |
| 33 | -16784 |
| 34 | -18473 |
| 35 | -20253 |
| 36 | -22825 |
| 37 | -24924 |
| 38 | -27514 |
| 39 | -30288 |
| 40 | -32870 |
| 41 | -36369 |
| 42 | -39363 |
| 43 | -42481 |
| 44 | -46996 |
| 45 | -51743 |