83400

Appears in sequences

• Coordination sequence for lattice D*_4 (with edges defined by l_1 norm = 1).at n=25A035471
• Number of -n..n arrays x(0..3) of 4 elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).at n=36A199911
• Integers n such that n^2 = 2*x*(y-x), where x and y are consecutive terms in A014574.at n=23A255230
• Number of 6-cycles in the n-transposition graph.at n=4A300851
• a(n) = binomial(n,2)*(binomial(n-1,2) + 2).at n=24A352405