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 | 5 |
| 2 | 15 |
| 3 | 31 |
| 4 | 61 |
| 5 | 97 |
| 6 | 145 |
| 7 | 199 |
| 8 | 265 |
| 9 | 337 |
| 10 | 421 |
| 11 | 511 |
| 12 | 613 |
| 13 | 721 |
| 14 | 841 |
| 15 | 967 |
| 16 | 1105 |
| 17 | 1249 |
| 18 | 1405 |
| 19 | 1567 |
| 20 | 1741 |
| 21 | 1921 |
| 22 | 2113 |
| 23 | 2311 |
| 24 | 2521 |
| 25 | 2737 |
| 26 | 2965 |
| 27 | 3199 |
| 28 | 3445 |
| 29 | 3697 |
| 30 | 3961 |
| 31 | 4231 |
| 32 | 4513 |
| 33 | 4801 |
| 34 | 5101 |
| 35 | 5407 |
| 36 | 5725 |
| 37 | 6049 |
| 38 | 6385 |
| 39 | 6727 |
| 40 | 7081 |
| 41 | 7441 |
| 42 | 7813 |
| 43 | 8191 |
| 44 | 8581 |
| 45 | 8977 |
| 46 | 9385 |
| 47 | 9799 |
| 48 | 10225 |
| 49 | 10657 |
| 50 | 11101 |
| 51 | 11551 |