43027

Appears in sequences

• a(n) = dot_product(1,2,...,n)*(3,4,...,n,1,2).at n=48A026037
• a(n) = a(n-1) + a(floor(n/2)) + a(ceiling(n/2)).at n=41A131205
• G.f. satisfies: A(x) = Catalan(x + x^2 + x^3*A(x)) where Catalan(x) = (1-sqrt(1-4*x))/(2x) is the g.f. of A000108.at n=9A162162
• Numbers of the form x^3 + SumOfCubedDigits(x).at n=35A225051
• Numbers that are the sum of seven fourth powers in exactly eight ways.at n=35A345830
• a(1)=2; thereafter a(n) = a(n-1) + gpf(a(n-1)) - 1, where gpf = greatest prime factor = A006530.at n=35A389408