63154

Appears in sequences

• a(n) = n*(6*n^2 - 7*n + 3)/2.at n=28A071230
• G.f. 1/sum(k>=0, (-1)^k * x^(k*(k+1)/2)).at n=46A208061
• Number of (w,x,y,z) with all terms in {1,...,n} and 2|w-x|>n+|y-z|.at n=27A212689
• Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nX3 array.at n=5A220284
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=30A220287
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=33A220287
• Solution of the complementary equation a(n) = a(n-1)*b(n-2) + 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=7A294383