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 | 0 |
| 1 | 63 |
| 2 | 990 |
| 3 | 3822 |
| 4 | 15222 |
| 5 | 15738 |
| 6 | 15804 |
| 7 | 60858 |
| 8 | 62394 |
| 9 | 62940 |
| 10 | 224694 |
| 11 | 241110 |
| 12 | 241338 |
| 13 | 243162 |
| 14 | 243420 |
| 15 | 244188 |
| 16 | 249306 |
| 17 | 249318 |
| 18 | 249564 |
| 19 | 249660 |
| 20 | 251370 |
| 21 | 251628 |
| 22 | 251634 |
| 23 | 252396 |
| 24 | 252660 |
| 25 | 252792 |
| 26 | 964314 |
| 27 | 964326 |
| 28 | 965340 |
| 29 | 972522 |
| 30 | 972636 |
| 31 | 973548 |
| 32 | 976620 |
| 33 | 990678 |
| 34 | 995034 |
| 35 | 995046 |
| 36 | 997098 |
| 37 | 997212 |
| 38 | 998124 |
| 39 | 998130 |
| 40 | 1003242 |
| 41 | 1005420 |