479908

Appears in sequences

• Number of compositions of n into 8 ordered relatively prime parts.at n=18A023033
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, I, L, U.at n=13A251617
• G.f. A(x,y) satisfies 1/x = Sum_{n=-oo..+oo} A(x,y)^n * (A(x,y)^n + y)^(n+1), as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y), read by rows.at n=62A379200