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 | 1358 |
| 2 | 7915 |
| 3 | 35917 |
| 4 | 143617 |
| 5 | 65281 |
| 6 | 29677 |
| 7 | 95710 |
| 8 | 435010 |
| 9 | 334624 |
| 10 | 152104 |
| 11 | 117004 |
| 12 | 90004 |
| 13 | 69235 |
| 14 | 276910 |
| 15 | 1107610 |
| 16 | 6922510 |
| 17 | 27690010 |
| 18 | 110760010 |
| 19 | 692250010 |
| 20 | 2769000010 |
| 21 | 11076000010 |
| 22 | 69225000010 |
| 23 | 276900000010 |
| 24 | 1107600000010 |
| 25 | 6922500000010 |
| 26 | 27690000000010 |
| 27 | 110760000000010 |
| 28 | 692250000000010 |
| 29 | 2769000000000010 |