0,6

a(n) = 1 iff n belongs to sequence A051532 - Avi Peretz (njk(AT)netvision.net.il), Feb 27 2001

a(6) = 3 because the commutator subgroup of the symmetric group S_3 is the group Z_3.

Cf. A059806, A051532.

Sequence in context: A066743 A046645 A016470 this_sequence A135261 A102774 A131918

Adjacent sequences: A059804 A059805 A059806 this_sequence A059808 A059809 A059810

nonn

Noam Katz (noamkj(AT)hotmail.com), Feb 24 2001