37831

Properties

Appears in sequences

• Prime number spiral (clockwise, North spoke).at n=32A054551
• List of Ormiston prime pairs.at n=19A072274
• a(n) = 2*3^n - 3*2^n + 1.at n=9A091344
• Number of partitions of n into parts but with two kinds of parts of sizes 1,2,3,4,5 and 6.at n=22A103925
• Primes p such that there are positive integers m and n and a prime q such that p = m^2+m-q = n^2+n+q.at n=31A162652
• Primes of the form ((p-1)/2)^2+((p+1)/2), where p is prime.at n=32A163418
• Noncomposite numbers in the southwestern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.at n=25A168026
• Number of permutations of 1..n with i-8<=p(i)<=i+2.at n=10A179349
• Primes of the form n^2 + n + 1, where n is semiprime.at n=16A193144
• Primes in A259184.at n=31A259186
• Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1.at n=27A294625
• Regular triangle read by rows: T(n,k) is the k-th ionization energy of the n-th chemical element (in kJ/mol), rounded to the nearest integer.at n=19A322834
• Primes p such that (p+nextprime(p))/6 is prime and 6*p is the sum of two consecutive primes.at n=38A339775
• a(n) = Sum_{k=0..floor(n/2)} binomial(n,k) * binomial(n+k,n-2*k).at n=9A378405
• Prime numbersat n=4001