7505784

Appears in sequences

• Expansion of 1/(1-3*x)^8; 8-fold convolution of A000244 (powers of 3).at n=7A036221
• a(n) = 3^n*(2*n)!/(n!)^2.at n=7A098658
• Expansion of e.g.f. BesselI(0,2*sqrt(3)*x) + BesselI(1,2*sqrt(3)*x)/sqrt(3).at n=14A098662
• Expansion of g.f. c(3x)^3, where c(x) is the g.f. of A000108.at n=7A101601
• Expansion of (sqrt(1-12*x^2)+12*x^2+2*x-1)/(2*x*sqrt(1-12*x^2)).at n=14A103978
• Triangle read by rows: T(n,k) = 3^(n-k)*C(2*n,n-k).at n=28A386825