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 | 4 |
| 2 | 9 |
| 3 | 24 |
| 4 | 49 |
| 5 | 51 |
| 6 | 75 |
| 7 | 99 |
| 8 | 125 |
| 9 | 249 |
| 10 | 251 |
| 11 | 375 |
| 12 | 499 |
| 13 | 501 |
| 14 | 624 |
| 15 | 749 |
| 16 | 751 |
| 17 | 875 |
| 18 | 999 |
| 19 | 1249 |
| 20 | 3751 |
| 21 | 4375 |
| 22 | 4999 |
| 23 | 5001 |
| 24 | 5625 |
| 25 | 6249 |
| 26 | 8751 |
| 27 | 9375 |
| 28 | 9999 |
| 29 | 18751 |
| 30 | 31249 |
| 31 | 40625 |
| 32 | 49999 |
| 33 | 50001 |
| 34 | 59375 |
| 35 | 68751 |
| 36 | 81249 |
| 37 | 90624 |
| 38 | 99999 |
| 39 | 109375 |
| 40 | 218751 |
| 41 | 281249 |
| 42 | 390625 |
| 43 | 499999 |