8614144

Appears in sequences

• If X_1,...,X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 6-subsets of X containing none of X_i, (i=1,...n).at n=18A130812
• a(n) = Product_{k=1..n} (16 - 4/k).at n=6A216702
• Square array read by antidiagonals downwards: super Patalan numbers of order 4.at n=27A248325
• a(n) = 2^n * binomial(4*n,n).at n=6A386918