A099639 Duplicate of A003555.
1, 66, 6216, 617716, 61732716, 6172882716, 617284382716, 61728399382716
Offset: 1
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.