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) |
|---|---|
| 21 | 2 |
| 22 | 4 |
| 23 | 6 |
| 24 | 11 |
| 25 | 15 |
| 26 | 24 |
| 27 | 50 |
| 28 | 83 |
| 29 | 127 |
| 30 | 209 |
| 31 | 310 |
| 32 | 431 |
| 33 | 679 |
| 34 | 921 |
| 35 | 1229 |
| 36 | 1624 |
| 37 | 2145 |
| 38 | 2770 |
| 39 | 3752 |
| 40 | 4866 |
| 41 | 6141 |
| 42 | 7753 |
| 43 | 9679 |
| 44 | 12005 |
| 45 | 15027 |
| 46 | 18134 |
| 47 | 22045 |
| 48 | 26368 |
| 49 | 31712 |
| 50 | 37763 |
| 51 | 45569 |
| 52 | 53810 |
| 53 | 63393 |
| 54 | 73560 |
| 55 | 86496 |
| 56 | 100071 |
| 57 | 117234 |
| 58 | 134623 |
| 59 | 155465 |
| 60 | 176876 |