23767

Properties

Appears in sequences

• Primes of the form 2*k*prime(k) + 1.at n=17A062403
• Home primes whose homeliness is 4.at n=30A133962
• Primes of the form 88x^2+32xy+127y^2.at n=36A140630
• Least Ramanujan prime having a gap of 2n to the next Ramanujan prime.at n=25A182874
• Primes of the form 2n^2 + 5.at n=33A201474
• Primes of the form 3n^2 + 4.at n=19A201477
• Number of partitions p of n such that 2*min(p) + (number of parts of p) is not a part of p.at n=37A238542
• Number of irreducible matrices X of all sizes with nonnegative integral entries satisfying X^2 = nX.at n=11A280782
• Primes equal to a centered pentagonal number plus 1.at n=18A285810
• Number of (n + 1, n + 2)-core partitions into odd parts.at n=13A299293
• Number of order ideals of type e^(1)_n.at n=12A299295
• Number of integer partitions of n having at most one permutation with all equal run-lengths.at n=45A383092
• a(0) = 1; thereafter a(n) = 10*n^2 - 5*n + 2.at n=49A383466
• Expansion of g/(1 + x^2*g^4), where g = 1+x*g^3 is the g.f. of A001764.at n=8A391306
• Prime numbersat n=2644