19182

Appears in sequences

• Sorted Galois numbers.at n=38A028689
• Product of a prime and the previous number.at n=33A036689
• Largest possible z-value of an integer solution (x,y,z) to 4/n = 1/x + 1/y + 1/z satisfying 0 < x < y < z. The x and y components are in A075245 and A075246.at n=20A075247
• Numbers n such that 3^n-2^(n-1) is prime.at n=32A095906
• Numbers representable in exactly two ways as (p-1)*p^e (where p is a prime and e >= 0) in ascending order.at n=16A114874
• Largest number that is not the sum of five n-gonal numbers.at n=27A118367
• a(n) = (p+2)!/p! where p is the n-th lesser twin prime, A001359(n).at n=10A126251
• Numbers m such that m^k does not divide the denominator of the m-th generalized harmonic number H(m,k) nor the denominator of the m-th alternating generalized harmonic number H'(m,k), for k = 4.at n=39A128674
• Integers that do not have a partition into a sum of an odd square and two (not necessarily distinct) triangular numbers.at n=36A191764
• Multiplicative order of 2 modulo prime(n)^2 for n >= 2.at n=32A243905
• Numbers m such that gcd(A001008(m), m) > 1, in increasing order.at n=34A256102
• a(n) = (4*n+3)*(4*n+2).at n=34A256833
• z-value of the lexicographically first solution (x,y,z) of 4/n = 1/x + 1/y + 1/z with 0 < x < y < z all integers, or 0 if there is no such solution. Corresponding x and y values are in A257839 and A257840.at n=22A257841
• Numbers that are both interprime and oblong.at n=34A263676
• a(n) is the least exponent k such that 3^k-1 is divisible by prime(n)^2, or -1 if no such k exists.at n=33A283620
• Number of length-n binary words avoiding (5+sqrt(5))/2-powers.at n=16A308148
• Totients congruent to 2 mod 4 and that have multiplicity 4.at n=9A334839
• a(n) = (prime(n)+1) * prime(n+1).at n=32A345727
• Oblong numbers which are products of four distinct primes.at n=26A358988
• Oblong numbers of the form (k-1)*k where k is the product of an odd number of distinct primes.at n=44A370494