74189

Properties

Appears in sequences

• Primes p such that p+-2 and p+-3 are not squarefree.at n=30A153214
• Numerators in the resistance triangle: T(k,n)=b, where b/c is the resistance distance R(k,n) for k resistors in an n-dimensional cube.at n=49A212045
• Numbers k such that (61*10^k - 1)/3 is prime.at n=19A295395
• Number of cyclic permutations of length n avoiding the pattern 231 (equivalently, 312).at n=14A309506
• a(1) = 1, a(2) = 2. For n > 2, a(n) is the least novel power of the greatest prime divisor of a(n-2) + a(n-1).at n=47A359874
• Prime numbersat n=7319