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) |
|---|---|
| 1 | 5 |
| 2 | 19 |
| 3 | 101 |
| 4 | 181 |
| 5 | 449 |
| 6 | 2029 |
| 7 | 2549 |
| 8 | 8821 |
| 9 | 13249 |
| 10 | 16901 |
| 11 | 21169 |
| 12 | 23549 |
| 13 | 34849 |
| 14 | 38149 |
| 15 | 41651 |
| 16 | 45361 |
| 17 | 62401 |
| 18 | 77659 |
| 19 | 89101 |
| 20 | 108289 |
| 21 | 115249 |
| 22 | 122501 |
| 23 | 130051 |
| 24 | 163351 |
| 25 | 191749 |
| 26 | 433201 |
| 27 | 505601 |
| 28 | 564899 |
| 29 | 697049 |
| 30 | 720901 |
| 31 | 795709 |
| 32 | 875521 |
| 33 | 960499 |
| 34 | 990001 |