25951

Properties

Appears in sequences

• Quintan primes: p = (x^5 + y^5)/(x + y).at n=19A002650
• Primes that remain prime through 3 iterations of function f(x) = 6x + 1.at n=20A023287
• Multiplicity of highest weight (or singular) vectors associated with character chi_166 of Monster module.at n=40A034554
• Primes whose consecutive digits differ by 3 or 4.at n=39A048415
• Euclid-Mullin sequence (A000945) with initial value a(1)=131071 instead of a(1)=2.at n=24A051331
• a(n) = numerator of b(n), where b(1) = 1, b(n) = Sum_{k=1..n-1} b(n-k) * H(k); H(k) = Sum_{j=1..k} 1/j, the k-th harmonic number.at n=6A128044
• Primes p such that p*floor(p/2) - 4 and p*floor(p/2) + 4 are prime numbers.at n=31A164622
• Primes such that applying "reverse and add" twice produces two more primes.at n=9A174402
• Primes of the form 3n^2 + 4.at n=21A201477
• Primes p = 1 mod 6 such that all three iterations p=(6p+1) give primes = 1 mod 6.at n=8A210686
• Number of maximal 2-independent sets in the planar 3 X n grid graph.at n=15A231882
• Least prime p such that prime(p*n)-1 is a square, or 0 if no such p exists.at n=48A259764
• Primes p such that there are exactly p solutions to y^2 + x*y + y == x^3 + x^2 - 10*x - 10 (mod p).at n=30A275777
• G.f. A(x) satisfies: Sum_{n>=0} A(x)^((n+1)^2) * x^n = Sum_{n>=0} (1 + A(x)^(n+1))^n * x^n.at n=8A326275
• Primes of the form (p^2 - p*q + q^2)/3, where p and q are consecutive primes.at n=13A342706
• Primes p such that, if q is the next prime, p^2 + q is a prime times a power of 10.at n=24A352852
• Prime numbersat n=2856