18058

Appears in sequences

• Sum along upward diagonal of Pascal triangle up to (but not including) halfway point.at n=24A010755
• Numbers k such that the continued fraction for sqrt(k) has period 79.at n=13A020418
• T(n,n-5), array T as in A038792.at n=19A038795
• Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 2..n-2.at n=9A180828
• Number of 0..n arrays x(0..11) of 12 elements with zero 6th differences.at n=40A200374
• Number of integer partitions of n whose distinct parts are pairwise coprime.at n=49A304709
• Number of (binary) max-heaps on 2n elements from the set {0,1} containing n 0's and n 1's.at n=15A309050
• The number of regions formed inside an isosceles triangle by straight line segments mutually connecting all vertices and all points that divide the two equal length sides into n equal parts; the base of the triangle contains no points other than its vertices.at n=16A332953
• a(n) = Sum_{k=0..n} binomial(4*n+k-1,n-k).at n=5A390338