6651216

Appears in sequences

• a(n) = (1/(9n-3))*M(3n; n,n,n), where M() is a multinomial coefficient.at n=6A024489
• a(n) = 132*binomial(n,12).at n=19A213380
• Number of permutations of 0..floor((n*3-2)/2) on odd squares of an n X 3 array such that each row and column of odd squares is increasing.at n=12A215294
• Sixth partial sums of fourth powers (A000583).at n=12A254470
• Triangle read by rows: T(n,k) = binomial(2*n+1, 2*k+1)*binomial(2*n-2*k, n-k)/(n+1-k) for 0 <= k <= n.at n=48A281000