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 | 4 |
| 2 | 515 |
| 3 | 1026 |
| 4 | 1537 |
| 5 | 2048 |
| 6 | 19686 |
| 7 | 20197 |
| 8 | 20708 |
| 9 | 21219 |
| 10 | 39368 |
| 11 | 39879 |
| 12 | 40390 |
| 13 | 59050 |
| 14 | 59561 |
| 15 | 78732 |
| 16 | 262147 |
| 17 | 262658 |
| 18 | 263169 |
| 19 | 263680 |
| 20 | 281829 |
| 21 | 282340 |
| 22 | 282851 |
| 23 | 301511 |
| 24 | 302022 |
| 25 | 321193 |
| 26 | 524290 |
| 27 | 524801 |
| 28 | 525312 |
| 29 | 543972 |
| 30 | 544483 |
| 31 | 563654 |
| 32 | 786433 |
| 33 | 786944 |
| 34 | 806115 |
| 35 | 1048576 |
| 36 | 1953128 |
| 37 | 1953639 |