32009

Properties

Appears in sequences

• Site percolation series for hexagonal lattice.at n=15A006739
• Number of partitions of n with equal nonzero number of parts congruent to each of 2 and 3 (mod 5).at n=52A035569
• Primes of the form x^2 + (x+3)^2.at n=28A076727
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=34A098717
• Greater of two consecutive primes, p < q, such that both p*q+p-q and p*q-p+q are prime numbers.at n=37A154552
• Honaker emirps: terms in A033548 that are emirps.at n=30A161118
• Primes containing the digits (2,0,0,9) in that order.at n=0A197114
• Primes of the form 4n^3+9.at n=6A201121
• Primes of the form 5n^2 + 9.at n=12A201487
• a(n) is a prime number that cannot be the center term of a length 3 arithmetic progression prime group with a common difference whose number of runs in binary expansion is 2.at n=33A231387
• Primes p such that 2*prime(p) + 1 = prime(q) for some prime q.at n=30A261361
• Discriminants of real quadratic number fields with 3-class rank 2.at n=0A269318
• Discriminants of real quadratic fields with 3-class group of type (3,3).at n=0A269319
• Numbers k such that (292*10^k - 1)/3 is prime.at n=24A281407
• Number of "Euclidean primes" with respect to the first n primes.at n=18A283936
• Numbers of the form a^6 + b^7, with integers a, b > 0.at n=19A303376
• Expansion of Product_{k>=1} 1/(1 - Sum_{j=1..k} x^(j*k)).at n=28A319758
• Numbers k such that 419*2^k+1 is prime.at n=19A323109
• Happy Honaker primes.at n=30A343192
• A sequence of integers from an additive problem with prime numbers.at n=30A348472