1882384

Appears in sequences

• Squares expressible as the sum of two positive cubes in at least one way.at n=28A050802
• a(n) is the least number x such that gcd(sigma(x), sigma(x+1)) = n.at n=28A084307
• Triangle read by rows: T(n,k)=binomial(n,k-1)*k^(k-1)*(n+1-k)^(n-k) (1<=k<=n).at n=29A103690
• Numbers with 35 divisors.at n=10A175745
• Triangular array read by rows. T(n,k) is the number of partial functions on n labeled objects in which the domain of definition contains exactly k elements such that for all i in {1,2,3,...}, (f^i)(x) is defined.at n=38A185390
• Numbers with prime factorization p^4*q^6.at n=10A190464
• a(n) = w(n+1)/(4*w(n)), where w = A203424.at n=5A203425
• Number of (n+1)X2 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=5A203789
• Number of (n+1)X7 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=0A203794
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=15A203796
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=20A203796
• Perfect powers of the form x^3 + y^3 where x and y are positive integers.at n=33A267088
• Numbers with 7 odd divisors.at n=24A267697
• Table read by rows. T(n, k) = [x^k] n! * Sum_{j=0..n} binomial(n*x, j).at n=33A358366
• Triangle read by rows: T(n, k) = binomial(n, k - 1)*(k - 1)^(k - 1)*k*(n - k + 1)^(n - k).at n=38A369019
• Perfect powers of Achilles numbers.at n=19A383394
• Powers k^m, m > 1, where k is an Achilles number such that A053669(k) < A006530(k).at n=9A389341
• Powers k^m, m > 1, where k is an Achilles number that is not a product of primorials.at n=13A389814
• Squares of Achilles numbers.at n=17A390435
• Powers k^m, m > 1, where k is an even Achilles number.at n=16A391376