114264

Appears in sequences

• Prime power perfect numbers: If n = Product p_i^r_i let PPsigma(n) = Product {Sum p_i^s_i, 2<=s_i<=r_i, s_i is prime}; sequence gives numbers k such that PPsigma(k) = 2*k.at n=7A096290
• Number of ways to place 2 nonattacking amazons (superqueens) on an n X n toroidal board.at n=22A178972
• Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + x - 2*x^2)/(1 - 3*x - 6*x^2).at n=8A180141
• Numbers with prime factorization p^2*q^3*r^3 where p, q, and r are distinct primes.at n=13A190106
• Primitive coreful-infinitary abundant numbers: powerful numbers k for which A363331(k) > 2*k.at n=36A391505