a(0)=0; thereafter a(n) = A002705(n) - 2.

A262585

a(0)=0; thereafter a(n) = A002705(n) - 2.

Terms

    a(0) =0a(1) =2a(2) =38a(3) =466a(4) =5826a(5) =76258a(6) =1032442a(7) =14316582a(8) =202116106a(9) =2893451650a(10) =41886157562a(11) =611902123282

External references