A154477 a(n) = A153240(A080068(n)).

0, 0, 0, 1, 0, 3, 2, 0, 1, 7, 4, 9, 8, 6, 7, 5, -6, -10, 16, 15, 10, -11, -15, 16, 22, 19, 24, 23, 18, 14, 28, 25, 21, 23, 11, -7, -26, 35, 34, 29, -18, 39, 38, 9, -8, 38, 33, -31, -35, 42, 37, 31, 32, 51, 48, -46, 54, 51, 40, -43, 58, 55, 43, 61, 60, 58, 52, 65, 62, -2, 68

Offset: 0

Author

Antti Karttunen, Jan 11 2009

Keywords

• sign

Comments

This sequence gives some indication of how well the terms of A080068 are balanced as general trees, which has some implications as to the correctness of A123050 (see comments at A080070).

Links

• A. Karttunen, Table of n, a(n) for n = 0..512

Crossrefs

See also A080071.