37986

Appears in sequences

• Total number of fixed points in rooted trees with n nodes.at n=11A005200
• a(n) = n*(a(n-1)*2+1), a(0) = 0.at n=6A067273
• Denominators of an Egyptian Fraction for phi = (1+sqrt(5))/2.at n=4A117116
• Number of composite numbers between exponents of successive Mersenne primes.at n=26A157894
• a(n) = 1521*n^2 - 39.at n=4A158770
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >=3n.at n=19A211063
• Number of (n+1) X (3+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=6A250792
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=42A250797
• Number of (7+1)X(n+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=2A250804