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 | 1 |
| 2 | 11 |
| 3 | 7 |
| 4 | 173 |
| 5 | 10111 |
| 6 | 312211 |
| 7 | 13112221 |
| 8 | 2909 |
| 9 | 5578070441 |
| 10 | 489923144699 |
| 11 | 76572179303098543109 |
| 12 | 244020609982169 |
| 13 | 46889682313579293049990557739475858123 |
| 14 | 213414262009265690085197238570402233414850657035591 |
| 15 | 323082514382425741194809828536919444925509282219 |