54816

Appears in sequences

• a(n) = 2*a(n-1) + 2*a(n-2); a(0)=0, a(1)=3.at n=11A083337
• Numbers k such that lambda(k) = lambda(k+1).at n=38A173695
• Triangle read by rows: T(n,k) is the number of compositions of n having degree of asymmetry equal to k (n>=0; 0<=k<=n/3).at n=66A275433