80180

Appears in sequences

• Coordination sequence for A_4 lattice.at n=19A008383
• Structured triakis tetrahedral numbers (vertex structure 4).at n=37A100175
• Number of integer sequences of length n+1 with sum zero and sum of absolute values 38.at n=3A157068
• Number of (w,x,y,z) with all terms in {1,...,n} and w*x<3*y*z.at n=18A211917
• Number of (n+2) X (2+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=12A231221
• Expansion of 1/(Sum_{k>=0} x^(k^2))^2.at n=43A363774