69206016

Appears in sequences

• 3-fold convolution of A000302 (powers of 4).at n=10A038845
• a(n) = ((5*n)!/(n!*(2*n)!))*(Gamma(1+n/2)/Gamma(1+5*n/2)).at n=5A091496
• a(n) = floor(2^(n-2)*3*n).at n=21A128543
• Number of defective 3-colorings of an n X 2 0..2 array connected diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.at n=11A229504
• Square array read by ascending antidiagonals: T(n,k) = [x^(2*k)] ( (1 + x)^(n+2)/(1 - x)^(n-2) )^k for n, k >= 0.at n=41A364518