50944

Appears in sequences

• Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is allowed.at n=21A001371
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 27 ones.at n=31A031795
• Number of score sequences in tournament with n players, when 3 points are awarded in each game.at n=7A047729
• Number of primitive (period n) bracelets using exactly two different colored beads.at n=20A056348
• Triangle T(n,k), read by rows, given by (1,0,2,1,3,2,4,3,5,4,6,5,7,6,8,7,9,8,...) DELTA (0,1,0,1,0,1,0,1,0,1,0,1,0,1,...) where DELTA is the operator defined in A084938.at n=49A200545
• Binomial transform of the centered triangular numbers A005448.at n=10A295288
• Number of 2Xn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=10A302323
• The number of maximally large absolute-difference triangles consisting of positive integers <= n.at n=18A337719