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 | 0 |
| 2 | 2 |
| 3 | 8 |
| 4 | 20 |
| 5 | 42 |
| 6 | 80 |
| 7 | 140 |
| 8 | 238 |
| 9 | 380 |
| 10 | 602 |
| 11 | 910 |
| 12 | 1372 |
| 13 | 1996 |
| 14 | 2900 |
| 15 | 4102 |
| 16 | 5790 |
| 17 | 8002 |
| 18 | 11046 |
| 19 | 14980 |
| 20 | 20282 |
| 21 | 27090 |
| 22 | 36092 |
| 23 | 47546 |
| 24 | 62510 |
| 25 | 81374 |
| 26 | 105700 |
| 27 | 136210 |
| 28 | 175084 |
| 29 | 223510 |
| 30 | 284694 |
| 31 | 360410 |
| 32 | 455244 |
| 33 | 572054 |
| 34 | 717160 |
| 35 | 894964 |
| 36 | 1114470 |
| 37 | 1382032 |
| 38 | 1710262 |
| 39 | 2108750 |
| 40 | 2594704 |
| 41 | 3182120 |