OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..500
Th. Stoll, On Families of Nonlinear Recurrences Related to Digits, Journal of Integer Sequences, Vol. 8 (2005), Article 05.3.2.
Eric Weisstein's World of Mathematics, Graham-Pollak Sequence
FORMULA
See A001521.
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Jan 18 2004
STATUS
approved
