50640

Appears in sequences

• Number of graphical basis partitions of 2n.at n=35A001130
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 30.at n=14A031708
• Numbers whose set of base 15 digits is {0,1}.at n=18A033051
• Given n colors, sequence gives number of ways to color the vertices of a square such that no edge has the same color on both of its vertices.at n=15A091940
• Triangle read by rows: T(n,k) is the number of set partitions of the set {1,2,...,n} (or of any n-set) containing k blocks of size 3 (0<=k<=floor(n/3)).at n=23A124503
• a(n) = 225*n^2 + n.at n=14A156814
• a(n) = 225*n^2 + 15.at n=15A158557
• Number of ways to place 3 nonattacking knights on a 3 X n board.at n=23A172212
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w^2>x^2+y^2.at n=24A211632
• a(n) is the number of acyclic orientations of the edges of the n-antiprism.at n=2A338154