55168

Appears in sequences

• Take pairs (x,y) with Sum_{j = x..y} j = concatenation of x and y. Sort pairs on y then x. This sequence gives y of each pair.at n=25A070153
• E.g.f.: (x^2/2-2*x+3)*tan(x/2+Pi/4)-3*x^3-x-3.at n=10A131611
• Principal number of K. Saito for tree of type E_n.at n=10A131656
• Number of (w,x,y,z) with all terms in {0,...,n} and at least one of these conditions holds: w<R, x>R, y>R, z>R, where R = max{w,x,y,z} - min{w,x,y,z}.at n=15A212754
• E.g.f.: sinh(sqrt(2)*x)/(sqrt(2)*(1-x)).at n=8A277432