29884416

Appears in sequences

• a(n) = (n/4)*2^(n/2)*((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).at n=38A187272
• Triangular array read by rows: 3 dimensional analog of A227997.at n=26A229955
• p-INVERT of (1,1,1,1,1,...), where p(S) = (1 - 3*S)^2.at n=10A291004