58513

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n-3)/3.at n=28A048029
• a(n) = 4*a(n-1) + 17*a(n-2), a(1)=1, a(2)=4.at n=6A097705
• The Wiener index of the graph \|/_\/_\/_..._\/_\|/ having n nodes on the horizontal path.at n=30A180571
• a(n) is the number of endofunctions on an n-set where there is an element with a preimage of cardinality greater than n/2.at n=6A351118
• Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 5x, p(n,x) = u*p(n-1,x) + v*p(n-2,x) for n >=3, where u = p(2,x), v = 1 - x - x^2.at n=33A367210