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 | 651 |
| 2 | 2667 |
| 3 | 11811 |
| 4 | 27559 |
| 5 | 172011 |
| 6 | 761763 |
| 7 | 1777447 |
| 8 | 2752491 |
| 9 | 3120771 |
| 10 | 7281799 |
| 11 | 11010027 |
| 12 | 12189603 |
| 13 | 28442407 |
| 14 | 32247967 |
| 15 | 48758691 |
| 16 | 49938051 |
| 17 | 113770279 |
| 18 | 116522119 |
| 19 | 199753347 |
| 20 | 466091143 |
| 21 | 516026527 |
| 22 | 2064117919 |
| 23 | 3220807683 |
| 24 | 7515217927 |
| 25 | 12883304451 |
| 26 | 30061043719 |
| 27 | 33281679391 |
| 28 | 45097156587 |
| 29 | 133127479327 |