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 | 4 |
| 3 | 10 |
| 4 | 25 |
| 5 | 55 |
| 6 | 109 |
| 7 | 211 |
| 8 | 371 |
| 9 | 651 |
| 10 | 1092 |
| 11 | 1767 |
| 12 | 2775 |
| 13 | 4383 |
| 14 | 6666 |
| 15 | 9990 |
| 16 | 14806 |
| 17 | 21695 |
| 18 | 31265 |
| 19 | 44852 |
| 20 | 63365 |
| 21 | 89132 |
| 22 | 124250 |
| 23 | 171560 |
| 24 | 235140 |
| 25 | 321661 |
| 26 | 435670 |
| 27 | 587219 |
| 28 | 787663 |
| 29 | 1051669 |
| 30 | 1396309 |
| 31 | 1848190 |
| 32 | 2432288 |
| 33 | 3192615 |
| 34 | 4174278 |
| 35 | 5435945 |
| 36 | 7054030 |
| 37 | 9134731 |
| 38 | 11779666 |
| 39 | 15152584 |
| 40 | 19436993 |
| 41 | 24867486 |