A083940 A014486-indices of symmetric binary trees.

0, 1, 6, 43, 51, 389, 416, 477, 504, 551, 4102, 4191, 4397, 4485, 4649, 5100, 5187, 5393, 5481, 5645, 5964, 6051, 6215, 6489, 47404, 47700, 48403, 48697, 49268, 50833, 51126, 51828, 52120, 52691, 53829, 54120, 54690, 55690, 59334, 59627, 60328

Offset: 0

Author

Antti Karttunen, May 13 2003

Keywords

• nonn

Comments

Fixed points of permutation A057163.

Crossrefs

a(n) = A080300(A083941(n)). Cf. A083938, A084108.

Formula

a(0)=0, a(n)=A072764bi(n-1, A057163(n-1)).