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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 12 |
| 6 | 27 |
| 7 | 48 |
| 8 | 130 |
| 9 | 252 |
| 10 | 705 |
| 11 | 1386 |
| 12 | 2295 |
| 13 | 7125 |
| 14 | 17316 |
| 15 | 31959 |
| 16 | 51054 |
| 17 | 74601 |
| 18 | 102600 |
| 19 | 351315 |
| 20 | 748440 |
| 21 | 2123189 |
| 22 | 4198848 |
| 23 | 6975417 |
| 24 | 10452896 |
| 25 | 14631285 |
| 26 | 19510584 |
| 27 | 25090793 |
| 28 | 31371912 |
| 29 | 38353941 |
| 30 | 46036880 |
| 31 | 54420729 |
| 32 | 63505488 |
| 33 | 73291157 |
| 34 | 83777736 |
| 35 | 94965225 |
| 36 | 106853624 |
| 37 | 119442933 |
| 38 | 132733152 |