A080274 Orbit size of each complete binary tree under Meeussen's bf<->df map on binary trees.
1, 1, 3, 202, 1582608
Offset: 0
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.