195225786

Appears in sequences

• Periodicity of the reciprocal of the Mersenne numbers (A001348).at n=10A100491
• a(0) = 0; for n>0, a(n) = period length of the decimal expansion of the number Sum_{i>=1} 2^(-n*i). Also period length of the fractions 1/b(n), where b(n) = 2*b(n-1) + 1, with b(1)=1.at n=30A136273