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 | 21 |
| 3 | 91 |
| 4 | 341 |
| 5 | 651 |
| 6 | 1911 |
| 7 | 2451 |
| 8 | 5461 |
| 9 | 7381 |
| 10 | 13671 |
| 11 | 14763 |
| 12 | 31031 |
| 13 | 28731 |
| 14 | 51471 |
| 15 | 59241 |
| 16 | 87381 |
| 17 | 83811 |
| 18 | 155001 |
| 19 | 130683 |
| 20 | 221991 |
| 21 | 223041 |
| 22 | 310023 |
| 23 | 280371 |
| 24 | 496951 |
| 25 | 406901 |
| 26 | 603351 |
| 27 | 597871 |
| 28 | 835791 |
| 29 | 708123 |
| 30 | 1244061 |
| 31 | 924483 |
| 32 | 1398101 |
| 33 | 1343433 |
| 34 | 1760031 |
| 35 | 1595601 |
| 36 | 2516921 |