792064

Appears in sequences

• If X_1,...,X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 6-subsets of X containing none of X_i, (i=1,...n).at n=11A130812
• The smallest k that is a Rhonda number in exactly n bases.at n=10A217986
• Triangle read by rows: T(n,k) = number of colored weighted Motzkin paths ending at (n,k).at n=38A293172
• Define K(n) = Integral_{t=0..1} (-1/2)^n/(1+t)*((1-t)^2*t^2/(1+t))^n*dt and write K(n) = d(n)*log(2) - b(n)/a(n) where a(n), d(n), b(n) are positive integers; sequence gives a(n).at n=6A316912