1,3

A rooted tree with a forbidden limb of length k is a rooted tree where the path from any leaf inward hits a branching node or the root within k steps.

N. J. A. Sloane, Transforms

Index entries for sequences related to rooted trees

a(n) satisfies a=SHIFT_RIGHT(EULER(a-b)) where b(3)=1, b(k)=0 if k != 3.

Cf. A002955, A002988-A002992, A052318-A052329.

Sequence in context: A001932 A005909 A003006 this_sequence A114584 A039826 A161746

Adjacent sequences: A052318 A052319 A052320 this_sequence A052322 A052323 A052324

nonn

Christian G. Bower (bowerc(AT)usa.net), Dec 15 1999.