25411

Properties

Appears in sequences

• a(n) = position of n^3 + (n+1)^3 + (n+2)^3 in A003072.at n=41A024972
• Number of ways of placing n nonattacking superqueens on n X n board (symmetric solutions count only once).at n=15A051224
• Primes of the form 2310*p + 1 where p is a prime.at n=2A051649
• Primes prime(k) such that prime(k)*k falls between twin primes.at n=18A080174
• Table read by rows where i-th row consists of primes P of the form P=j*P(i)# -1 or P=j*P(i)# +1 with 0 < j < P(i+1). Here P(r)# = A002110.at n=42A087715
• A088250(n) + 1.at n=5A088251
• Primes with a prime number of partitions into prime parts.at n=32A146949
• Partial sums of A048890.at n=18A172973
• G.f. satisfies: A(x) = (1 + x*A(x))*(1 + x^2*A(x)^3 + x^3*A(x)^4).at n=9A199247
• Primes of the form A060735(k) +- 1, where A060735 lists multiples of primorials (A002110) less than the next larger primorial.at n=41A257658
• (2,3,5,7)-primes (see comments for precise definition).at n=21A262728
• Primes p such that both 2p-1 and 2p^2-2p+1 are prime.at n=28A274609
• Numbers k such that psi(phi(k))/k > psi(phi(m))/m for all m < k, where phi is Euler's totient function (A000010) and psi is the Dedekind psi function (A001615).at n=19A293712
• Numbers p such that p, 2p-1, 3p-2, 4p-3 are primes.at n=10A336059
• Position of the first occurrence of n in A337474.at n=36A337476
• Discriminants of imaginary quadratic fields with class number 33 (negated).at n=35A351671
• Prime powers that are equal to the sum of the first k prime powers (including 1) for some k.at n=14A364947
• E.g.f. satisfies A(x) = exp(x * (1-x)^2 * A(x)) / (1-x)^3.at n=5A378090
• Smallest primitive prime factor of 9^n-1.at n=32A379642
• Echo primes: primes p such that the greatest prime factor of p-1 is a suffix of p.at n=43A383907