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 | 141 |
| 2 | 273 |
| 3 | 339 |
| 4 | 399 |
| 5 | 519 |
| 6 | 591 |
| 7 | 621 |
| 8 | 831 |
| 9 | 873 |
| 10 | 885 |
| 11 | 981 |
| 12 | 1011 |
| 13 | 1029 |
| 14 | 1107 |
| 15 | 1209 |
| 16 | 1251 |
| 17 | 1329 |
| 18 | 1533 |
| 19 | 1587 |
| 20 | 1809 |
| 21 | 1869 |
| 22 | 1923 |
| 23 | 2085 |
| 24 | 2163 |
| 25 | 2301 |
| 26 | 2355 |
| 27 | 2625 |
| 28 | 2715 |
| 29 | 2763 |
| 30 | 2787 |
| 31 | 2877 |
| 32 | 2913 |
| 33 | 2943 |
| 34 | 2961 |
| 35 | 3039 |
| 36 | 3099 |
| 37 | 3111 |
| 38 | 3123 |
| 39 | 3153 |
| 40 | 3213 |
| 41 | 3675 |