157950

Appears in sequences

• Coefficient of x^8 in expansion of (1+x+x^2)^n.at n=11A005716
• a(n) = 9*binomial(n,4) = 3*n*(n-1)*(n-2)*(n-3)/8.at n=27A060008
• a(n) = sum_(d|n) ((product_(d|n) d) / d).at n=44A220846
• Numbers n of the form 4*k+2 such that (sigma(n) mod n) divides n, where sigma is given by A000203.at n=10A254999
• Number of 3-cycles in the n X n rook graph.at n=26A288961