1610596352

Appears in sequences

• Sum of 2^n, ..., 2^(n+1) - 1.at n=15A010036
• Duplicate of A136488.at n=30A135098
• a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) for n > 4, with first terms 1, 2, 4, 7.at n=31A135360
• a(n) = 2^n - A005418(n).at n=30A136488