35025

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (composite numbers).at n=25A024471
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = (composite numbers).at n=24A025091
• Number of benzenoids with 22 hexagons, C_(2v) symmetry and containing n carbon atoms.at n=23A123106
• G.f. A(x) satisfies A(x) = 1 + x*(1-x^2)*A(x)^3.at n=8A388847