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 | 3 |
| 2 | 21 |
| 3 | 91 |
| 4 | 273 |
| 5 | 651 |
| 6 | 1333 |
| 7 | 2451 |
| 8 | 4161 |
| 9 | 6643 |
| 10 | 10101 |
| 11 | 14763 |
| 12 | 20881 |
| 13 | 28731 |
| 14 | 38613 |
| 15 | 50851 |
| 16 | 65793 |
| 17 | 83811 |
| 18 | 105301 |
| 19 | 130683 |
| 20 | 160401 |
| 21 | 194923 |
| 22 | 234741 |
| 23 | 280371 |
| 24 | 332353 |
| 25 | 391251 |
| 26 | 457653 |
| 27 | 532171 |
| 28 | 615441 |
| 29 | 708123 |
| 30 | 810901 |
| 31 | 924483 |
| 32 | 1049601 |
| 33 | 1187011 |
| 34 | 1337493 |
| 35 | 1501851 |
| 36 | 1680913 |