OFFSET
1,1
COMMENTS
a(a(n))=n: a self-inverse permutation with A010051(a(n)+n)=1. - Reinhard Zumkeller, Nov 25 2004
LINKS
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, May 26 2002
EXTENSIONS
Corrected and extended by Lior Manor May 27 2002
STATUS
approved