27342

Appears in sequences

• Third elementary symmetric function of 3,4,...,n+4.at n=6A024184
• Triangle T(n,k) of k-block ordered bicoverings of an unlabeled n-set, n >= 2, k = 3..n+floor(n/2).at n=16A060092
• Number of 7-block ordered bicoverings of an unlabeled n-set.at n=6A060095
• a(n) = 9*(n-2)^2 * (n^2 - 2*n - 1).at n=7A060788
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^5-M)/4, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=22A096039
• Numbers that cannot be expressed as a sum of 2 triangular numbers and a power of 2.at n=4A112665
• a(0)=1; thereafter a(n)=a(n-1)+a([n/Phi]), where Phi=(1+sqrt(5))/2, the golden ratio.at n=46A131882
• a(n) = n*(n+1)*(8*n + 1)/6.at n=27A132124
• a(n) = floor((5^n)/(3^n + 2^n)).at n=19A191696
• Potential magic constants of a 10 X 10 magic square composed of consecutive primes.at n=34A192087
• Table of elementary symmetric function a_k(3,4,...,n+2) (no 1 and 2).at n=48A196845
• Number of undirected labeled graphs on n nodes with exactly 4 cycle graphs as connected components.at n=5A215764
• Number T(n,k) of undirected labeled graphs on n nodes with exactly k cycle graphs as connected components; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=49A215771
• a(n) is the smallest number that can be partitioned into n ways as the sum of two brilliant numbers (A078972).at n=23A338474
• Triangle read by rows: T(n,k) is the total number of movable letters in all members of the k-partitions of [n], with 1 <= k <= n.at n=51A367468