7489051

Properties

Appears in sequences

• a(n+1) = n*a(n) + a(n-1) with a(0)=0, a(1)=1.at n=11A001040
• Denominator of the fraction whose continued fraction is 0, barover{1, 2, ..., n}.at n=10A096871
• a(n) = numerator of the continued fraction which has the positive integers which are <= n and are coprime to n as its terms.at n=10A127614
• Prime numbersat n=507591