40792

Appears in sequences

• Starting positions of strings of four 7's in the decimal expansion of Pi.at n=8A083632
• Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and the median of every three consecutive elements nondecreasing.at n=9A263595
• G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n / A(x)^(n+1) * Product_{k=1..n} (1 + k*x).at n=15A324615
• Expansion of 1/((1-x) * (1-2*x) * (1-3*x))^2.at n=6A383841
• Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of 1/Product_{j=0..k} (1 - j*x)^2.at n=51A383843
• a(n) = [x^(2*n)] Product_{k=0..n} 1/(1 - k*x)^2.at n=3A384205