OFFSET
1,1
REFERENCES
M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988.
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Dec 12 2003
EXTENSIONS
Corrected sequence and extended by Vincenzo Librandi, Mar 30 2010
Offset corrected by Arkadiusz Wesolowski, Aug 09 2011
STATUS
approved