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 | 1 |
| 2 | 1 |
| 3 | 9 |
| 4 | 1 |
| 5 | 25 |
| 6 | 9 |
| 7 | 49 |
| 8 | 1 |
| 9 | 3 |
| 10 | 25 |
| 11 | 121 |
| 12 | 9 |
| 13 | 169 |
| 14 | 49 |
| 15 | 225 |
| 16 | 1 |
| 17 | 289 |
| 18 | 3 |
| 19 | 361 |
| 20 | 25 |
| 21 | 441 |
| 22 | 121 |
| 23 | 529 |
| 24 | 9 |
| 25 | 625 |
| 26 | 169 |
| 27 | 1 |
| 28 | 49 |
| 29 | 841 |
| 30 | 225 |
| 31 | 961 |
| 32 | 1 |
| 33 | 1089 |
| 34 | 289 |
| 35 | 1225 |
| 36 | 3 |
| 37 | 1369 |
| 38 | 361 |
| 39 | 1521 |
| 40 | 25 |
| 41 | 1681 |
| 42 | 441 |
| 43 | 1849 |
| 44 | 121 |
| 45 | 75 |
| 46 | 529 |
| 47 | 2209 |
| 48 | 9 |
| 49 | 2401 |
| 50 | 625 |
| 51 | 2601 |
| 52 | 169 |
| 53 | 2809 |
| 54 | 1 |
| 55 | 3025 |
| 56 | 49 |
| 57 | 3249 |
| 58 | 841 |
| 59 | 3481 |
| 60 | 225 |
| 61 | 3721 |
| 62 | 961 |
| 63 | 147 |
| 64 | 1 |
| 65 | 4225 |
| 66 | 1089 |
| 67 | 4489 |
| 68 | 289 |
| 69 | 4761 |
| 70 | 1225 |
| 71 | 5041 |
| 72 | 3 |
| 73 | 5329 |