18112

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 67.at n=32A031565
• Number of ways to place non-crossing diagonals in convex (n+4)-gon so as to create no triangles or quadrilaterals.at n=13A054514
• McKay-Thompson series of class 32B for the Monster group.at n=39A058630
• E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(2*x)*cosh(2*x).at n=5A218300
• Number of partitions p of n such that mean(p) < multiplicity(min(p)).at n=40A240203
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes V, U, X, N.at n=20A247127
• Irregular table read by rows: T(n,k) is the number of 2n-step closed self-avoiding paths on a 2D square lattice with area k, where k >= n-1.at n=20A334756