44390

Appears in sequences

• Number of nonzero palindromes < 10^n and containing at least one digit '1'.at n=8A050684
• Number of asymmetric mobiles (circular rooted trees) with n nodes and 4 leaves.at n=16A055365
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 387", based on the 5-celled von Neumann neighborhood.at n=41A271545
• Position of second appearance of 2n in the sequence of prime gaps A001223; if 2n does not appear at least twice, a(n) = -1.at n=41A356221