80580

Appears in sequences

• Coefficient of x^6 in expansion of (1+x+x^2)^n.at n=15A005714
• Number of triangles a queen can make (starting anywhere) on an n X n board.at n=34A030117
• Values of the difference d for 6 primes in geometric-arithmetic progression with the minimal sequence {7*7^j + j*d}, j = 0 to 5.at n=34A209205
• Coefficient of x^n in the expansion of (1+x+x^2)^(3*n).at n=6A370170
• Expansion of (1/x) * Series_Reversion( x / (1 + x^3 * (1 + x)^2) ).at n=18A389129