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 | -1 |
| 1 | -1 |
| 2 | 11 |
| 3 | 35 |
| 4 | 71 |
| 5 | 119 |
| 6 | 179 |
| 7 | 251 |
| 8 | 335 |
| 9 | 431 |
| 10 | 539 |
| 11 | 659 |
| 12 | 791 |
| 13 | 935 |
| 14 | 1091 |
| 15 | 1259 |
| 16 | 1439 |
| 17 | 1631 |
| 18 | 1835 |
| 19 | 2051 |
| 20 | 2279 |
| 21 | 2519 |
| 22 | 2771 |
| 23 | 3035 |
| 24 | 3311 |
| 25 | 3599 |
| 26 | 3899 |
| 27 | 4211 |
| 28 | 4535 |
| 29 | 4871 |
| 30 | 5219 |
| 31 | 5579 |
| 32 | 5951 |
| 33 | 6335 |
| 34 | 6731 |
| 35 | 7139 |
| 36 | 7559 |
| 37 | 7991 |
| 38 | 8435 |
| 39 | 8891 |
| 40 | 9359 |
| 41 | 9839 |
| 42 | 10331 |
| 43 | 10835 |
| 44 | 11351 |
| 45 | 11879 |
| 46 | 12419 |