48066

Appears in sequences

• T(n,n-3), array T as in A047140.at n=8A047145
• Number of (n+1)X(n+1) -7..7 symmetric matrices with every 2X2 subblock having sum zero and two, three or four distinct values.at n=3A211448
• Total number of swaps needed to sort all n! permutations of n elements by the optimal dual-pivot quicksort "Count".at n=7A334750