-48384

Appears in sequences

• E.g.f. 1/(1 - sin(x) + sin(x)^2).at n=8A002969
• E.g.f. 1/(1+sin(x)+sin(x)^2).at n=8A029585
• Triangle T(n, k) = Product_{j=1..k} Product_{i=0..j-1} ( 1 - (n-k+1)*(2*i-1) ) with T(n, 0) = 1 and T(n, n) = n!, read by rows.at n=31A156699
• Rational part of circle radii in nested circles and hexagons (see comment).at n=5A255162
• Triangle read by rows: T(0,0) = 1; T(n,k) = -2*T(n-1,k) + 3*T(n-2,k-1) for 0 <= k <= floor(n/2); T(n,k)=0 for n or k < 0.at n=39A302747
• Triangle read by rows of coefficients in expansion of (3-2x)^n, where n is a nonnegative integer.at n=41A303901
• Triangle read by rows of coefficients in expansions of (-2 + 3*x)^n, where n is nonnegative integer.at n=39A317498
• Triangle read by rows: T(0,0) = 1; T(n,k) = -2 T(n-1,k) + 3 * T(n-3,k-1) for k = 0..floor(n/3); T(n,k)=0 for n or k < 0.at n=43A317503