4997120

Appears in sequences

• a(n) = 2*a(n-1) + 4*a(n-2); with a(0)=1, a(1)=4.at n=13A087206
• Number of subsets of {1, 2, 3, ..., n} that include no consecutive odd integers.at n=26A279245
• Number of subsets of {1, 2, 3, ..., n} that include no consecutive even integers.at n=26A279312