38261

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 15.at n=28A031603
• Ennea-primes: primes that are the sum of nine consecutive primes, with the first, third, sixth and eighth twin primes.at n=0A138400
• Difference between nearest integer to (Li(10^n)-Li(3)) and pi(10^n), where Li(10^n)-Li(3) = integral(3.. 10^n, dt/log(t)) (A223166) and pi(10^n) = number of primes <= 10^n (A006880).at n=11A223167
• Primes of form n^2 + 625.at n=38A256777
• Least prime p = prime(n)^2 + prime(n+1)^2 + prime(n+2)^2 + prime(n+3)^2 + q^2, where q > prime(n+3) is also prime.at n=19A263724
• Hyperartiads.at n=36A270798
• Primes that are sums of a sequence of consecutive terms of A006094.at n=18A340537
• Expansion of g.f. A(x) satisfying A(x) = x + A(x/(1-x)) * A(x/(1+x)).at n=9A374569
• Triangle read by rows: T(n,k) = number of collections of up to k subsets of [n] covering [n], with [0]={}; n>=0, k=0..2^n.at n=27A381683
• Prime numbers of the form A385986(1) + ... + A385986(k) for some k > 0.at n=39A385987
• Prime numbersat n=4038