0,2

By considering the ring Z_n and the finite fields GF(q) this sequence contains the values of Euler function (A000010) and prime powers - 1 . By taking direct products if n and m belong to the sequence so is m*n.

Cf. A000010, A000961.

Adjacent sequences: A070929 A070930 A070931 this_sequence A070933 A070934 A070935

Sequence in context: A039160 A048264 A141825 this_sequence A093686 A030319 A039168

nonn

Sharon Sela (sharonsela(AT)hotmail.com), May 24 2002