1677721600

Appears in sequences

• a(n) = n*2^n - 2^n = 2^n*(n-1).at n=25A058922
• a(n) = 2^(n-1)*A047240(n).at n=26A128205
• Number of binary strings of length n with equal numbers of 0001 and 1000 substrings.at n=31A164161
• a(n) = n*4^(n/2 - 1)*(9 + (-1)^n).at n=25A187274
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood.at n=30A286021
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 262", based on the 5-celled von Neumann neighborhood.at n=31A287291
• Squares that can be expressed as the sum of two positive squares but not as the sum of three positive squares.at n=13A309779