OFFSET
1,2
COMMENTS
Apparently a(n) exists for all n.
Note related linear patterns in the graphs of this sequence and of A215456.
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
FORMULA
A215456(a(n))=2n-1, n=1,2,...
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Aug 11 2012
STATUS
approved