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 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 21 |
| 7 | 36 |
| 8 | 44 |
| 9 | 60 |
| 10 | 73 |
| 11 | 100 |
| 12 | 104 |
| 13 | 144 |
| 14 | 157 |
| 15 | 180 |
| 16 | 208 |
| 17 | 256 |
| 18 | 261 |
| 19 | 324 |
| 20 | 328 |
| 21 | 376 |
| 22 | 421 |
| 23 | 484 |
| 24 | 476 |
| 25 | 560 |
| 26 | 601 |
| 27 | 648 |
| 28 | 680 |
| 29 | 784 |
| 30 | 765 |
| 31 | 900 |
| 32 | 912 |
| 33 | 984 |
| 34 | 1057 |
| 35 | 1108 |
| 36 | 1128 |
| 37 | 1296 |
| 38 | 1333 |
| 39 | 1396 |
| 40 | 1420 |
| 41 | 1600 |
| 42 | 1569 |
| 43 | 1764 |
| 44 | 1768 |
| 45 | 1836 |
| 46 | 1981 |
| 47 | 2116 |
| 48 | 2064 |
| 49 | 2268 |
| 50 | 2305 |
| 51 | 2436 |
| 52 | 2504 |
| 53 | 2704 |
| 54 | 2673 |