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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 9 |
| 5 | 15 |
| 6 | 25 |
| 7 | 35 |
| 8 | 49 |
| 9 | 59 |
| 10 | 81 |
| 11 | 99 |
| 12 | 113 |
| 13 | 135 |
| 14 | 169 |
| 15 | 183 |
| 16 | 213 |
| 17 | 243 |
| 18 | 277 |
| 19 | 311 |
| 20 | 341 |
| 21 | 363 |
| 22 | 421 |
| 23 | 463 |
| 24 | 493 |
| 25 | 531 |
| 26 | 601 |
| 27 | 635 |
| 28 | 681 |
| 29 | 735 |
| 30 | 781 |
| 31 | 839 |
| 32 | 901 |
| 33 | 939 |
| 34 | 1033 |
| 35 | 1079 |
| 36 | 1125 |
| 37 | 1195 |
| 38 | 1301 |
| 39 | 1347 |
| 40 | 1409 |
| 41 | 1487 |
| 42 | 1557 |
| 43 | 1639 |
| 44 | 1717 |
| 45 | 1763 |
| 46 | 1893 |
| 47 | 1983 |
| 48 | 2045 |
| 49 | 2127 |