1097376068

Appears in sequences

• a(n) is smallest number such that a(n)^2 + 1 is divisible by 5^n.at n=14A034939
• One of the two successive approximations up to 5^n for 5-adic integer sqrt(-1).at n=13A048899
• One of the two successive approximations up to 5^n for 5-adic integer sqrt(-1).at n=14A048899
• a(n) is the unique even-valued residue modulo 5^n of a number m such that m^2+1 is divisible by 5^n.at n=12A258929
• a(n) is the unique even-valued residue modulo 5^n of a number m such that m^2+1 is divisible by 5^n.at n=13A258929
• a(n) is the least k such that A051903(k^2+1) = n.at n=13A274721
• Minimum m coprime to 5 such that the convergence speed of m^^m := m^(m^^(m-1)) is equal to n >= 0, where A317905(n) represents the convergence speed of m^^m (and m = A047201(n), the n-th non-multiple of 5).at n=14A337833
• a(n) is the smallest base of the form 8 + 10*k which is characterized by a convergence speed of n, where A317905(n) represents the convergence speed of m^^m.at n=13A337836
• Smallest nonnegative integer coprime to 5 with a constant congruence speed >= n (see A373387 for the definition of "constant congruence speed").at n=13A387665
• Smallest nonnegative integer coprime to 5 with a constant congruence speed >= n (see A373387 for the definition of "constant congruence speed").at n=14A387665