OFFSET

0,1

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..8590

EXAMPLE

The node 11 in the infinite trunk is A255056(11) = 30. Apart from 32, which is the next node (node 12) in the infinite trunk, it has one leaf-child 31 at the "left side" (less than 32), and one leaf-child 33 (more than 32) at the "right side", and also at that side a subtree of three nodes (34 <- 38 <- 43), starting from 34, so in total there are four branches emanating from 30, [i.e., four different k such that A236840(k) = 30], thus a(11) = 4.

CROSSREFS

KEYWORD

nonn

AUTHOR

Antti Karttunen, Feb 20 2015

STATUS

approved