1,3

These and subsequent values for (twice) square-free and (twice) prime-squared orders can be found in the Liskovets reference.

V. A. Liskovets, Some identities for enumerators of circulant graphs.

Sequence in context: A006065 A096981 A035541 this_sequence A135279 A035631 A050046

Adjacent sequences: A060963 A060964 A060965 this_sequence A060967 A060968 A060969

nonn

Valery A. Liskovets (liskov(AT)im.bas-net.by), May 09 2001