66501

Appears in sequences

• From a problem concerning circulant matrices and Gauss sums.at n=14A007792
• a(n) = (2*n-1)*(n^2 -n +2)/2.at n=40A063488
• Number of nX2 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.at n=27A166796