1188096

Appears in sequences

• Expansion of (1-16*x)^(-1/4), related to quartic factorial numbers.at n=6A034385
• 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=12A130812
• a(n) = 2^n*(3*n)!/(n!*(2*n)!).at n=6A228484
• Square array read by antidiagonals downwards: super Patalan numbers of order 4.at n=21A248325