330752

Appears in sequences

• Number of positive integers <= 2^n of form x^2 + 4 y^2.at n=21A000072
• Expansion of tan(sin(x))*sin(x)/2.at n=6A024300
• Half the number of 3 X n binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.at n=7A069429
• Half the number of n X 8 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.at n=1A069446
• Expansion of (1 - sqrt(1 - 4*x - 12*x^2))/(2*x).at n=9A103970
• Triangular array read by rows: T(n,0) = 2^n, T(n,k) = Sum_{i=n-k..n, j=0..i-n+k, i<>n or j<>k} T(i,j) for k > 0.at n=44A337129