52334

Appears in sequences

• a(n) = number of Egyptian fractions 1 = 1/x_1 + ... + 1/x_k (for any k), with 0 < x_1 <= ... <= x_k = n.at n=33A092666
• Numbers k such that 2^k == 18 (mod k).at n=13A128126
• a(n) = total number of different ways a grasshopper can take n hops.at n=21A141002
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 421", based on the 5-celled von Neumann neighborhood.at n=42A272051