97470

Appears in sequences

• Numbers n such that n*phi(n-1) is a perfect square.at n=33A069069
• Numbers k such that 2^(2*k) - (2*k-1) is prime.at n=19A119386
• Numbers k such that k and k^2 use only the digits 0, 4, 5, 7 and 9.at n=16A136952
• Rhonda numbers in sexagesimal number system.at n=19A255731
• T(n, k) is the number of k-element connected subposets of the n-th Boolean lattice, 0 <= k <= 2^n.at n=41A270952
• a(n) = 4*n^3 - 3*n + 1.at n=29A280089
• Numbers k such that k = x + y, k' = x' + y' and k'' = x'' + y'', where k' and k'' are the first and second arithmetic derivatives of k.at n=22A293252