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 | 11 |
| 2 | 31 |
| 3 | 131 |
| 4 | 351 |
| 5 | 1343 |
| 6 | 2211 |
| 7 | 4931 |
| 8 | 6879 |
| 9 | 12191 |
| 10 | 24419 |
| 11 | 29823 |
| 12 | 50691 |
| 13 | 68963 |
| 14 | 79551 |
| 15 | 103871 |
| 16 | 148931 |
| 17 | 205439 |
| 18 | 227043 |
| 19 | 300831 |
| 20 | 357983 |
| 21 | 389091 |
| 22 | 493119 |
| 23 | 571871 |
| 24 | 705059 |
| 25 | 912771 |
| 26 | 1030403 |
| 27 | 1092831 |
| 28 | 1225151 |
| 29 | 1295139 |
| 30 | 1443011 |
| 31 | 2048511 |
| 32 | 2248223 |
| 33 | 2571491 |
| 34 | 2685759 |
| 35 | 3308099 |
| 36 | 3443103 |
| 37 | 3870051 |
| 38 | 4330911 |
| 39 | 4657631 |
| 40 | 5177891 |
| 41 | 5735519 |