56401

Properties

Appears in sequences

• Number of 2n-bead black-white complementable necklaces with n black beads and fundamental period 2n.at n=12A045632
• Row 4 of A007754.at n=13A058795
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 9 ones in any 4 X 4 X 4 subtriangle.at n=12A153967
• Number of n X 1 1..2 arrays with every element value z a city block distance of exactly z from another element value z.at n=30A209603
• Number of n X 3 0..1 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.at n=9A224033
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.at n=35A341083
• Value of prime number D for incrementally largest values of minimal y satisfying the equation x^2 - D*y^2 = -5.at n=34A341085
• Expansion of e.g.f. 1/(2 - exp(4*x))^(1/4).at n=5A352119
• Result of inserting the integers n = 0, 1, 2, ... in this order into an initially empty list, where n is inserted between the pair of consecutive elements with sum equal to n and minimal absolute difference, or at the end of the list if no such pair exists.at n=21A360447
• Prime terms of A000328.at n=33A381017
• Prime numbersat n=5718