302064

Appears in sequences

• a(n) = 3*binomial(4*n+8, n)/(n+3).at n=6A006634
• Inverse of Riordan array (1/(1-x), x/(1-x)^4), A109960.at n=38A109962
• Triangle read by rows. T(n,k) = Sum_{j=0..k} binomial(k-j+2, 2)*T(n-1, j), for n>=0, 0<=k<=n, with T(0,0)=1 and T(n,n)=0 for n>0.at n=51A339350
• Number of dissections of a convex (4n+4)-sided polygon into n hexagons and one square (up to equivalence).at n=6A367872