OFFSET
1,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Weakly Binary Tree.
EXAMPLE
Sum of all 1-digit Wedderburn-Etherington numbers is 14.
Sum of all 2-digit Wedderburn-Etherington numbers is 178.
Sum of all 3-digit Wedderburn-Etherington numbers is 1641.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Oct 29 2007
EXTENSIONS
a(11)-a(20) from Alois P. Heinz, Sep 07 2017
STATUS
approved