25243

Properties

Appears in sequences

• Discriminants of imaginary quadratic fields with class number 17 (negated).at n=37A046014
• Euclid-Mullin sequence (A000945) with initial value a(1)=11 instead of a(1)=2.at n=23A051309
• Fifth term of strong prime sextets: p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1) > p(m+1)-p(m).at n=6A054817
• Primes p such that 2^p-1 and the p-th Fibonacci number have a common factor. Prime terms of A074776.at n=11A080050
• Numerators of successive approximations to zeta(3) = Sum_{k>0} 1/k^3, using Zeilberger's formula with s=3.at n=1A084225
• Diagonal sums of the Riordan matrix (g(x),x*g(x)), where g(x) = (1-x-sqrt(1-2*x-3*x^2-4*x^3))/(2*x^2*(1+x)) (A190252).at n=11A190255
• Smallest prime such that the n preceding prime gaps are strictly decreasing and the n subsequent prime gaps strictly increasing.at n=3A248704
• Numbers n such that n^2 = a^2 + b^5 (with integers a, b > 0) and gcd(a, b, n) = 1.at n=22A293284
• Triangle read by rows: numerators of c_{n,k}, n >= 0, 0 <= k <= n, used in the proof that Zeta(3) is irrational.at n=23A303988
• Number of subsets of {1...n} containing all prime indices of the elements.at n=20A324736
• Primes dividing nonzero terms in A002065.at n=28A328704
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^3 * B(x)) ), where B(x) is the g.f. of A002293.at n=5A381910
• Primes having only {2, 3, 4, 5} as digits.at n=37A386139
• Prime numbersat n=2785