18066

Appears in sequences

• Number of positive integers <= 2^n of form 7 x^2 + 10 y^2.at n=18A054189
• a(n) is the smallest integer k such that the n-th (backward) difference of the partition sequence A000041 is positive from k onwards.at n=32A155861
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 561", based on the 5-celled von Neumann neighborhood.at n=25A272937