77200

Appears in sequences

• Shifts left 2 places under "DHK" (bracelet, identity, unlabeled) transform.at n=20A032258
• Triangle T(n, k) = coefficients of ( t(n, x) ) where t(n, x) = (1-x)^(n+1)*p(n, x)/x, p(n, x) = x*D( p(n-1, x) ), with p(1, x) = x/(1-x)^2, p(2, x) = x*(1+x)/(1-x)^3, and p(3, x) = x*(1+8*x+x^2)/(1-x)^4, read by rows.at n=47A166340
• Triangle T(n, k) = coefficients of ( t(n, x) ) where t(n, x) = (1-x)^(n+1)*p(n, x)/x, p(n, x) = x*D( p(n-1, x) ), with p(1, x) = x/(1-x)^2, p(2, x) = x*(1+x)/(1-x)^3, and p(3, x) = x*(1+8*x+x^2)/(1-x)^4, read by rows.at n=52A166340
• a(0)=0, a(1)=1, a(n)=(a(n-1) XOR n) + a(n-2).at n=23A182509
• Number of 6-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=21A187176
• Coefficient of x^n in Product_{k>=1} ((1 + x^k) / (1 - x^k))^(k*n).at n=6A270924