624240

Appears in sequences

• Closed meanders with 3 components and 2n bridges.at n=5A006658
• Triangle read by rows: T(n,k) = number of closed meander systems of order n with k<=n components.at n=30A008828
• Beukers integral Integral_{y = 0..1} Integral_{x = 0..1} -log(x*y) / (1-x*y) * P_n(2*x-1) * P_n(2*y-1) dx dy = (A(n) + B(n)*zeta(3)) / A003418(n)^3. This sequence gives the values of B(n).at n=3A171485
• Area A of the bicentric quadrilaterals such that A, the sides, the radius of the circumcircle and the radius of the incircle are integers.at n=19A219192
• a(n) = ((p-1)^3 - (p-1)^2)/4 where p is the n-th prime.at n=32A331764