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 | 0 |
| 3 | 2 |
| 4 | 6 |
| 5 | 15 |
| 6 | 28 |
| 7 | 53 |
| 8 | 86 |
| 9 | 137 |
| 10 | 200 |
| 11 | 299 |
| 12 | 418 |
| 13 | 571 |
| 14 | 748 |
| 15 | 997 |
| 16 | 1282 |
| 17 | 1639 |
| 18 | 2040 |
| 19 | 2545 |
| 20 | 3106 |
| 21 | 3767 |
| 22 | 4492 |
| 23 | 5401 |
| 24 | 6394 |
| 25 | 7523 |
| 26 | 8744 |
| 27 | 10225 |
| 28 | 11822 |
| 29 | 13625 |
| 30 | 15556 |
| 31 | 17743 |
| 32 | 20074 |
| 33 | 22685 |
| 34 | 25456 |
| 35 | 28675 |
| 36 | 32086 |
| 37 | 35803 |
| 38 | 39724 |
| 39 | 44209 |
| 40 | 48934 |
| 41 | 54067 |
| 42 | 59456 |
| 43 | 65365 |