83360

Appears in sequences

• Small-number statistic from the enumeration of domino tilings of a 5-pillow of order n.at n=19A112838
• E.g.f. B(x) satisfies: B'(x) = A(x)*C(x) such that B(x)^2 - A(x)^2 = 3 and C(x)^2 - B(x)^2 = 5, where A(x) and C(x) are the e.g.f.s of A292121 and A292123, respectively.at n=6A292122
• Numbers of squares formed by this procedure on n-th step: Step 1, draw a unit square. Step n, draw a unit square with center in every intersection of lines of the figure in step n-1.at n=31A336288