0,2

Central terms of the triangle in A155955;

a(n) = A062206(n)*A000079(n).

Sequence in context: A013822 A010047 A054956 this_sequence A085535 A060613 A139772

Adjacent sequences: A155954 A155955 A155956 this_sequence A155958 A155959 A155960

nonn

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 31 2009