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 | 5 |
| 4 | 13 |
| 5 | 23 |
| 6 | 47 |
| 7 | 75 |
| 8 | 131 |
| 9 | 203 |
| 10 | 323 |
| 11 | 477 |
| 12 | 729 |
| 13 | 1041 |
| 14 | 1517 |
| 15 | 2132 |
| 16 | 3012 |
| 17 | 4134 |
| 18 | 5718 |
| 19 | 7713 |
| 20 | 10453 |
| 21 | 13918 |
| 22 | 18538 |
| 23 | 24357 |
| 24 | 32037 |
| 25 | 41612 |
| 26 | 54040 |
| 27 | 69538 |
| 28 | 89362 |
| 29 | 113925 |
| 30 | 145095 |
| 31 | 183473 |
| 32 | 231697 |
| 33 | 290899 |
| 34 | 364577 |
| 35 | 454632 |
| 36 | 566016 |
| 37 | 701436 |
| 38 | 867800 |
| 39 | 1069430 |
| 40 | 1315550 |
| 41 | 1612595 |