22980

Appears in sequences

• "BHK" (reversible, identity, unlabeled) transform of 1,2,3,4,...at n=11A032099
• McKay-Thompson series of class 13A for the Monster group with a(0) = -2.at n=15A034318
• McKay-Thompson series of class 13A for the Monster group with a(0) = 0.at n=15A034319
• Triangle read by rows in which each row is the inverse binomial transform of a diagonal of A089246.at n=38A089302
• a(n) = 1000*n - 20.at n=22A157515
• G.f. satisfies: A(x) = 1 + x*A(x)*A(-x) + x^2*(A(x)^2 + A(-x)^2).at n=12A233895
• Triangular array read by rows. T(n,k) is the number of n-permutations with k cycles of length one or k cycles of length two, n>=0,0<=k<=n.at n=37A237928
• Take apart the sides of each of the integer-sided triangles with perimeter n (at their vertices) and rearrange them orthogonally in 3-space so that their endpoints coincide at a single point. a(n) is the total surface area of all rectangular prisms enclosed in this way.at n=34A308236
• Triangle read by rows: Take a hexagon with all diagonals drawn, as in A331931. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+4.at n=44A331932
• E.g.f. satisfies A(x) = exp( 4 * (exp(x*A(x)^(3/4)) - 1) ).at n=4A375872