OFFSET
1,1
EXAMPLE
If psd(j) = A006881(j), psd(1)=6 and psd(2)=10, hence a(4)=6; psd(3) =14 and psd(4)=15, hence a(1)=14
CROSSREFS
KEYWORD
nonn
AUTHOR
Philippe Lallouet (philip.lallouet(AT)orange.fr), Jul 13 2008
EXTENSIONS
Edited by N. J. A. Sloane, Jul 20 2008
Corrected a(21), a(22), a(36), extended by R. J. Mathar, Jul 23 2008
STATUS
approved