58539

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 = (1, p(1), p(2), ...).at n=24A024470
• Expansion of g.f.: (1+x^2)*(1+2*x^2)/(1-3*x+3*x^2-6*x^3+2*x^4-2*x^5).at n=11A123892
• a(n) = n^3 - n*(n+1)/2.at n=39A160378
• Integers that are the sum of two consecutive semiprimes, as well as the product of two consecutive semiprimes.at n=14A288955
• a(n) = 3^n - 2^(n-1) + 2 (n>=1).at n=9A304167