43573

Properties

Appears in sequences

• a(1)=2; a(n) for n>1 is the smallest prime number > a(n-1) such that the concatenation of all previous terms is also prime.at n=41A080155
• Integers that do not appear in A103502.at n=23A103504
• Middle of 3 consecutive prime numbers, p1, p2, p3, such that p1*p2*p3*d1*d2 = average of twin prime pairs; d1 (delta) = p2 - p1, d2 (delta) = p3 - p2.at n=28A153410
• There appear to be at least n primes in the range (x-2*sqrt(x), x] for all x >= a(n).at n=30A189027
• Number T(n,k) of solid standard Young tableaux of shape [[n,k],[n-k]]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=31A214775
• Number T(n,k) of solid standard Young tableaux of shape [[n,k],[n-k]]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=32A214775
• Number of solid standard Young tableaux of shape [[n,n-3],[3]].at n=4A215299
• Number of solid standard Young tableaux of shape [[n,n-4],[4]].at n=3A215300
• Primes which are the arithmetic mean of the squares of six consecutive primes.at n=3A234432
• Primes p with prime(p)^3 + 2*p^3 and p^3 + 2*prime(p)^3 both prime.at n=16A236574
• a(n) = Sum_{k=1..n} k^2 * floor(n/k)^3.at n=23A350124
• Number of one-sided pseudo-polyarcs with n cells.at n=3A354406
• Number of partitions of n with at most four part sizes.at n=51A364793
• Prime numbersat n=4538