OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1023
Wikipedia, Levenshtein Distance
FORMULA
a(n) = Sum_{k=0..n} A152487(n,k).
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 06 2008
STATUS
approved