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) |
|---|---|
| 2 | 1 |
| 3 | 5 |
| 4 | 13 |
| 5 | 31 |
| 6 | 57 |
| 7 | 107 |
| 8 | 173 |
| 9 | 275 |
| 10 | 401 |
| 11 | 599 |
| 12 | 837 |
| 13 | 1143 |
| 14 | 1497 |
| 15 | 1995 |
| 16 | 2565 |
| 17 | 3279 |
| 18 | 4081 |
| 19 | 5091 |
| 20 | 6213 |
| 21 | 7535 |
| 22 | 8985 |
| 23 | 10803 |
| 24 | 12789 |
| 25 | 15047 |
| 26 | 17489 |
| 27 | 20451 |
| 28 | 23645 |
| 29 | 27251 |
| 30 | 31113 |
| 31 | 35487 |
| 32 | 40149 |
| 33 | 45371 |
| 34 | 50913 |
| 35 | 57351 |
| 36 | 64173 |
| 37 | 71607 |
| 38 | 79449 |
| 39 | 88419 |
| 40 | 97869 |