1756755

Appears in sequences

• a(n) = (2*n)!*(2*n-1)/(2^n*n!).at n=7A126965
• Q(3,n), where Q(m,k) is defined in A127080 and A127137.at n=14A127145
• Numbers with exactly 5 distinct odd prime divisors {3,5,7,11,13}.at n=25A147578
• Triangle read by rows: T(n,k) is the number of oriented colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns.at n=54A325008