196474

Appears in sequences

• a(0) = 5, a(1) = 7; for n>1, a(n) = a(n-1)+a(n-2)-(2n-2).at n=26A089061
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >n.at n=25A210291
• a(n) = (A051894(n) - 1)/2.at n=24A361152