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 | 5 |
| 2 | 11 |
| 3 | 41 |
| 4 | 151 |
| 5 | 181 |
| 6 | 541 |
| 7 | 811 |
| 8 | 881 |
| 9 | 1151 |
| 10 | 1181 |
| 11 | 1451 |
| 12 | 1481 |
| 13 | 1511 |
| 14 | 1811 |
| 15 | 4111 |
| 16 | 4441 |
| 17 | 4451 |
| 18 | 4481 |
| 19 | 5441 |
| 20 | 5581 |
| 21 | 5851 |
| 22 | 5881 |
| 23 | 8111 |
| 24 | 8581 |
| 25 | 11411 |
| 26 | 11551 |
| 27 | 14411 |
| 28 | 14551 |
| 29 | 14851 |
| 30 | 15451 |
| 31 | 15511 |
| 32 | 15541 |
| 33 | 15551 |
| 34 | 15581 |
| 35 | 15881 |
| 36 | 18181 |
| 37 | 18451 |
| 38 | 18481 |
| 39 | 18541 |
| 40 | 41141 |
| 41 | 41411 |
| 42 | 41851 |
| 43 | 44111 |