OFFSET
1,2
COMMENTS
FORMULA
A000005(a(n)) = nonisolated number.
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Nov 18 2009
EXTENSIONS
Corrected (132, 140, 148 removed, 152 inserted etc.) by R. J. Mathar, Jun 04 2010
STATUS
approved