103027

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 69 ones.at n=4A031837
• Largest squarefree number k such that Q(sqrt(-k)) has class number n.at n=25A038552
• Number of nX6 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=11A302678
• Largest number k such that C(-k) is the cyclic group of order n, where C(D) is the class group of the quadratic field with discriminant D; or 0 if no such k exists.at n=25A357600