A080318 Breadth-first-wise A014486-like encoding of the branch-reduced binomial-mod-2 binary trees (A080293).
2, 56, 16256, 4186496, 274374557696, 70239893062016, 4603241631720636416, 301678043576445270327296, 1295697331082095312130350876983296, 331698516757016399905370236824584576
Offset: 0