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 | 7 |
| 2 | 25 |
| 3 | 65 |
| 4 | 137 |
| 5 | 249 |
| 6 | 411 |
| 7 | 631 |
| 8 | 919 |
| 9 | 1283 |
| 10 | 1733 |
| 11 | 2277 |
| 12 | 2925 |
| 13 | 3685 |
| 14 | 4567 |
| 15 | 5579 |
| 16 | 6731 |
| 17 | 8031 |
| 18 | 9489 |
| 19 | 11113 |
| 20 | 12913 |
| 21 | 14897 |
| 22 | 17075 |
| 23 | 19455 |
| 24 | 22047 |
| 25 | 24859 |
| 26 | 27901 |
| 27 | 31181 |
| 28 | 34709 |
| 29 | 38493 |
| 30 | 42543 |
| 31 | 46867 |
| 32 | 51475 |
| 33 | 56375 |
| 34 | 61577 |
| 35 | 67089 |
| 36 | 72921 |
| 37 | 79081 |
| 38 | 85579 |
| 39 | 92423 |
| 40 | 99623 |
| 41 | 107187 |
| 42 | 115125 |
| 43 | 123445 |
| 44 | 132157 |
| 45 | 141269 |
| 46 | 150791 |
| 47 | 160731 |
| 48 | 171099 |