65629

Properties

Appears in sequences

• Expansion of 1/((1-2*x)*(1+x+2*x^2)).at n=17A089977
• Primes of the form 2^(2^k)+93.at n=3A160032
• Number of nondecreasing arrangements of n+3 numbers in 0..4 with each number being the sum mod 5 of three others.at n=29A183899
• Minimal number (in decimal representation) with n nonprime substrings in base-4 representation (substrings with leading zeros are considered to be nonprime).at n=38A217104
• Primes whose base-9 representation also is the base-3 representation of a prime.at n=30A235472
• Primes whose base-9 representation also is the base-4 representation of a prime.at n=25A235619
• a(n) = Sum_{k=1..n} tau(gcd(k,n))^gcd(k,n), where tau(n) is the number of divisors of n.at n=7A344194
• Prime numbersat n=6555