69760

Appears in sequences

• Pisot sequence E(10,21), a(n) = floor( a(n-1)^2/a(n-2)+1/2 ).at n=12A014007
• a(n) = 2*(n-1)*(n^2 + 1).at n=32A071233
• Number of (w,x,y,z) with all terms in {1,...,n} and min{|w-x|,|w-y|}=min{|x-y|,|x-z|}.at n=34A212579
• Principal diagonal of the convolution array A213838.at n=23A213839
• Number of canyon polycubes of a given volume.at n=15A239257
• Triangle read by columns: T(n,k) is the number of functions from an n-element set to a k-element set that are not one-to-one, k>=n>=1.at n=49A347034