44159

Properties

Appears in sequences

• Number of 3 X n binary matrices up to row and column permutations.at n=16A002727
• Let c(k) denote the k-th composite number and p(k) the k-th prime number; then a(n) = Sum_{i=n*(n-1)/2+1 .. n*(n+1)/2} c(i) - Sum_{i=1..n} p(i).at n=42A024850
• Erroneous version of A057835.at n=5A045915
• Primes whose successive differences are increasing squares.at n=11A088173
• a(n) is the smallest natural number m such that (10^n)! + m is prime.at n=4A108518
• Primes p such that p^3 +- (p+1) are primes.at n=36A137472
• Primes p of the form a^2-b^2 and p*a-b is also prime (with b=prime and a=b+1).at n=27A173875
• Number of unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 6.at n=39A244460
• a(n) is the least prime p such that n^2 + (p-n)^2 is prime and k^2 + (p-k)^2 is composite for 1 <= k < n.at n=49A376920
• Prime numbersat n=4596