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) |
|---|---|
| 3 | 1 |
| 4 | 2 |
| 5 | 5 |
| 6 | 8 |
| 7 | 15 |
| 8 | 22 |
| 9 | 31 |
| 10 | 40 |
| 11 | 55 |
| 12 | 69 |
| 13 | 87 |
| 14 | 104 |
| 15 | 126 |
| 16 | 149 |
| 17 | 172 |
| 18 | 198 |
| 19 | 228 |
| 20 | 256 |
| 21 | 288 |
| 22 | 323 |
| 23 | 357 |
| 24 | 394 |
| 25 | 433 |
| 26 | 473 |
| 27 | 514 |
| 28 | 557 |
| 29 | 603 |
| 30 | 651 |
| 31 | 700 |
| 32 | 751 |
| 33 | 803 |
| 34 | 857 |
| 35 | 914 |
| 36 | 972 |
| 37 | 1031 |
| 38 | 1092 |
| 39 | 1156 |
| 40 | 1218 |
| 41 | 1285 |
| 42 | 1353 |
| 43 | 1423 |
| 44 | 1496 |
| 45 | 1569 |
| 46 | 1641 |
| 47 | 1718 |
| 48 | 1796 |
| 49 | 1877 |
| 50 | 1958 |
| 51 | 2041 |
| 52 | 2126 |
| 53 | 2211 |
| 54 | 2299 |