OFFSET
1,2
COMMENTS
1 7 11 13 19 23 25 31 35 37 43 47 ...
2 6 10 14 18 22 26 30 34 38 42 46 ...
3 5 9 15 17 21 27 29 33 39 41 45 ...
4 8 12 16 20 24 28 32 36 40 44 48 ...
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, Jan 24 2004
EXTENSIONS
Corrected and extended by Ray Chandler, Jan 30 2004
STATUS
approved