66448

Appears in sequences

• Sum of the second moments of all partitions of n with weights starting from 0.at n=18A066188
• a(n) = index of second occurrence of A161926(n) in A114381.at n=27A161927
• Floor(6^n/(1+1/(2*cos(5*Pi/11)))^n).at n=39A240840
• Irregular triangle read by rows: T(n,k) (n>=2, 0<=k<=n) = total number of unbranched k-catapolyheptagons with k pentagons and n-k heptagons.at n=46A323850