360096

Appears in sequences

• Coefficient of x^5 in expansion of (1 + x + x^2)^n.at n=29A000574
• a(n)^2 is a square whose decimal expansion digits occur with an exact frequency of 3.at n=16A052095
• a(n) = A027907(2^n, n), where A027907 = triangle of trinomial coefficients.at n=5A136518
• Numbers k such that sigma_2(k)*sigma_1(k)/sigma_0(k) is a perfect square.at n=24A152218
• Number of 3-cycles in the n X n rook graph.at n=32A288961