2621438

Appears in sequences

• a(n) = 5*2^n - 2.at n=19A051633
• Start with 1, then alternately add 2 or double.at n=39A123208
• a(n) = 5*2^(n-2) - 2 for n > 1, with a(1) = 1.at n=20A131051
• Row sums of triangle A134061.at n=19A134062
• Number of acyclic edge covers of the complete bipartite graph K_{n,2}.at n=17A328890