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 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 27 |
| 5 | 39 |
| 6 | 59 |
| 7 | 83 |
| 8 | 99 |
| 9 | 131 |
| 10 | 167 |
| 11 | 191 |
| 12 | 235 |
| 13 | 275 |
| 14 | 311 |
| 15 | 367 |
| 16 | 427 |
| 17 | 467 |
| 18 | 515 |
| 19 | 587 |
| 20 | 635 |
| 21 | 715 |
| 22 | 799 |
| 23 | 847 |
| 24 | 939 |
| 25 | 1023 |
| 26 | 1087 |
| 27 | 1191 |
| 28 | 1271 |
| 29 | 1343 |
| 30 | 1459 |
| 31 | 1579 |
| 32 | 1651 |
| 33 | 1747 |
| 34 | 1879 |
| 35 | 1967 |
| 36 | 2107 |
| 37 | 2251 |
| 38 | 2331 |
| 39 | 2451 |
| 40 | 2607 |
| 41 | 2715 |
| 42 | 2879 |
| 43 | 3007 |
| 44 | 3119 |
| 45 | 3295 |
| 46 | 3439 |
| 47 | 3559 |
| 48 | 3703 |
| 49 | 3895 |
| 50 | 4015 |