38720

Appears in sequences

• 9-gonal (or enneagonal) pyramidal numbers: a(n) = n*(n+1)*(7*n-4)/6.at n=32A007584
• Numbers with 42 divisors.at n=36A175750
• Number of unsigned permutations in S_{3n-1} whose breakpoint graph contains only cycles of length 3.at n=3A178217
• Numbers of the form p^6*q^2*r where p, q, and r are distinct primes.at n=34A179703
• Number of 2 X 2 matrices having all terms in {1,...,n} and positive odd determinant.at n=20A211068
• Even 9-gonal (nonagonal) pyramidal numbers.at n=23A218329
• Triangle read by rows: T(n,k) is the number of ascent sequences of length n with maximal element k-1.at n=48A218577
• Number of length 4+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=8A250323
• Number of defective (binary) heaps on 2n elements from the set {0,1} with exactly n defects.at n=14A372489