165932

Appears in sequences

• Form a conjugate partition of row with 1+1+1 in first row. all other rows are the union of their parents. a(n) = number of types of piles in the n-th row.at n=34A064480
• G.f.: A(x) = 1 + x*A(x)^3 / ( A(-x)*A(I*x)*A(-I*x) ), where I^2 = -1.at n=8A216712
• Irregular triangle read by rows: T(n,k) (0 <= k <= n^2) are coefficients of exact spanning probability for site percolation along the second dimension for an n X n 2D nnsquare lattice with periodic boundary conditions.at n=42A366467