139471

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 77 ones.at n=4A031845
• Squarefree conductors of quintic fields.at n=27A085715
• Number of nX2 zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.at n=4A201984
• Number of nX5 zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.at n=1A201987
• T(n,k) is the number of n X k zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.at n=16A201989
• T(n,k) is the number of n X k zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.at n=19A201989