33015

Appears in sequences

• Number of ordered quadruples of integers from [ 1..n ] with no global factor.at n=28A015634
• Expansion of (1-x)/(1-x-3x^3).at n=19A052900
• a(n) is the smallest integer k such that the n-th (forward) difference of the partition sequence A000041 is positive from k onwards.at n=41A119712
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >n.at n=16A210291
• Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7.at n=22A252249