25185

Appears in sequences

• Numbers k such that rotating digits of k^2 left once still yields a square.at n=18A045878
• Equal count of primes congruent to 1 mod 4 and 3 mod 4 associated with primes in A007351 (the zero beginning the sequence indicates the prime 2).at n=11A092198
• Numbers n such that Maple 9.5, Maple 10, Maple 11 and Maple 12 give the wrong answers for the number of partitions of n.at n=41A110375
• a(n) = number of primes that are the initial prime of a twin prime pair that are > (10^n)*(10^n+1) and < (10^n)*(10^n+1)+2*(10^n)+2.at n=7A135433
• G.f.: [Sum_{n>=0} x^(n*(n+1)/2) * (1+x)^n ]^3.at n=38A182152
• Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,34).at n=11A250241
• Expansion of Product_{k>=1} (1 + x^(3*k-1))^(3*k-1) * (1 + x^(3*k-2))^(3*k-2).at n=25A262924
• a(n) is the least k such that the continued fraction for sqrt(k) has periodic part [r, 1, 2, ..., n-1, n, n-1, ..., 1, 2r] for some positive integer r.at n=3A351139
• Products k of 4 distinct primes (or tetraprimes) such that k has no squarefree neighbors.at n=40A364141