1,2
C. K. Caldwell, The Prime Pages
C. Nash, Prime Form [?Broken link]
Cf. A002981, A002982, A046029, A046029.
Sequence in context: A010346 A089142 A123215 * A058070 A151413 A031241
Adjacent sequences: A051852 A051853 A051854 * A051856 A051857 A051858
nonn
Andrew Walker (ajw01(AT)uow.edu.au), Dec 13 1999