131067

Appears in sequences

• [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 1 mod 4}.at n=23A024389
• Numerator of Sum_{i=1..n} i/2^i.at n=18A036295
• a(n) = A000079(n) - A153130(n).at n=17A153237
• Partial sums of A162255.at n=28A164053
• a(n) = 2^n - 5.at n=17A168616
• a(n) = round((2^n - n - 1)/4).at n=18A173010
• Least positive integer k such that 1 + 1/2 + ... + 1/k > n/phi, where phi = golden ratio = (1+sqrt(5))/2.at n=19A226160
• 2^p - 5 where p is prime.at n=6A241678
• Decimal representation of the n-th iteration of the "Rule 245" elementary cellular automaton starting with a single ON (black) cell.at n=8A267924
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 561", based on the 5-celled von Neumann neighborhood.at n=16A289377
• Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a power of 2.at n=26A353889
• a(n) is the number of trailing zeros in (2^n)!.at n=19A354463