2097142

Appears in sequences

• Number of bits required to represent binomial(2^n, 2^(n-1)).at n=21A112884
• a(n) = 2^n - 10.at n=21A246168
• a(n) is the smallest number k for which A000120(k) = A000120(k') = n, or -1 if no such k exists, where k' is the arithmetic derivative of k (A003415).at n=19A350553