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 | 1 |
| 1 | 3 |
| 2 | 11 |
| 3 | 31 |
| 4 | 69 |
| 5 | 131 |
| 6 | 223 |
| 7 | 351 |
| 8 | 521 |
| 9 | 739 |
| 10 | 1011 |
| 11 | 1343 |
| 12 | 1741 |
| 13 | 2211 |
| 14 | 2759 |
| 15 | 3391 |
| 16 | 4113 |
| 17 | 4931 |
| 18 | 5851 |
| 19 | 6879 |
| 20 | 8021 |
| 21 | 9283 |
| 22 | 10671 |
| 23 | 12191 |
| 24 | 13849 |
| 25 | 15651 |
| 26 | 17603 |
| 27 | 19711 |
| 28 | 21981 |
| 29 | 24419 |
| 30 | 27031 |
| 31 | 29823 |
| 32 | 32801 |
| 33 | 35971 |
| 34 | 39339 |
| 35 | 42911 |
| 36 | 46693 |
| 37 | 50691 |
| 38 | 54911 |
| 39 | 59359 |