0,2
Central terms of the triangle in A155955;
a(n) = A062206(n)*A000079(n).
Sequence in context: A010047 A187548 A054956 * A085535 A060613 A139772
Adjacent sequences: A155954 A155955 A155956 * A155958 A155959 A155960
nonn
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 31 2009