230368

Appears in sequences

• a(n) = 225*n^2 - n.at n=31A156813
• a(n) = 900*n^2 - 2*n.at n=15A158408
• a(n) = 1024*n^2 - 32.at n=14A158683
• Number of compositions of n whose distinct parts are pairwise coprime, where a singleton is not considered coprime unless it is (1).at n=20A337665