1239524

Appears in sequences

• a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3), t = A023532.at n=23A024314
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 3), t = (Lucas numbers).at n=22A024877
• Numbers n such that n and n+1 both have 36 divisors.at n=19A274809
• Numbers k such that both k and k+1 are recursive abundant numbers (A333928).at n=24A333951