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 | 1 |
| 2 | 9 |
| 3 | 41 |
| 4 | 129 |
| 5 | 313 |
| 6 | 649 |
| 7 | 1201 |
| 8 | 2049 |
| 9 | 3281 |
| 10 | 5001 |
| 11 | 7321 |
| 12 | 10369 |
| 13 | 14281 |
| 14 | 19209 |
| 15 | 25313 |
| 16 | 32769 |
| 17 | 41761 |
| 18 | 52489 |
| 19 | 65161 |
| 20 | 80001 |
| 21 | 97241 |
| 22 | 117129 |
| 23 | 139921 |
| 24 | 165889 |
| 25 | 195313 |
| 26 | 228489 |
| 27 | 265721 |
| 28 | 307329 |
| 29 | 353641 |
| 30 | 405001 |
| 31 | 461761 |
| 32 | 524289 |
| 33 | 592961 |
| 34 | 668169 |
| 35 | 750313 |
| 36 | 839809 |
| 37 | 937081 |