80352

Appears in sequences

• Number of ways to place 7 nonattacking knights on an n X n toroidal board.at n=5A173436
• Numbers with prime factorization pq^4r^5.at n=15A190468
• Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).at n=26A320893
• a(n) is the smallest positive integer k such that the Diophantine equation x^3 + y^3 + z^3 = k^2, where 0 < x < y < z has exactly n integer solutions.at n=10A385354
• a(n) = Sum_{k=0..floor(3*n/8)} (k+1) * binomial(k,3*n-8*k).at n=43A392312