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(4)=1, b(k)=0 if k != 4.

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

Sequence in context: A027056 A024428 A049075 this_sequence A059221 A114203 A100132

Adjacent sequences: A052324 A052325 A052326 this_sequence A052328 A052329 A052330

nonn

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