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 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 151 |
| 5 | 211 |
| 6 | 251 |
| 7 | 521 |
| 8 | 1151 |
| 9 | 1511 |
| 10 | 2111 |
| 11 | 2221 |
| 12 | 2251 |
| 13 | 2521 |
| 14 | 2551 |
| 15 | 5521 |
| 16 | 11251 |
| 17 | 11551 |
| 18 | 12211 |
| 19 | 12251 |
| 20 | 12511 |
| 21 | 15121 |
| 22 | 15511 |
| 23 | 15551 |
| 24 | 21121 |
| 25 | 21211 |
| 26 | 21221 |
| 27 | 21521 |
| 28 | 22111 |
| 29 | 22511 |
| 30 | 25111 |
| 31 | 25121 |
| 32 | 51151 |
| 33 | 51511 |
| 34 | 51521 |
| 35 | 51551 |
| 36 | 52121 |
| 37 | 52511 |
| 38 | 55511 |
| 39 | 111121 |
| 40 | 111211 |