77640

Appears in sequences

• 4*a(n) is the maximum possible determinant of a 3 X 3 matrix whose entries are 9 consecutive primes starting with prime(n).at n=30A340923
• Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, m+n-1 Y's and m+n-1 Z's in which the X lies to the right of at least m Y's and at least m Z's.at n=32A351585
• Number of perfect-powers x in the range 2^n < x < 2^(n+1).at n=35A377467
• Expansion of g.f.: x/((1-x^2)^3*(1-2*x)).at n=16A389373