65695

Appears in sequences

• Number of orbits of length n under the map whose periodic points are counted by A001642.at n=23A060167
• INVERT transform of A055615, n*mu(n).at n=20A144028
• G.f.: Sum_{n>=0} n!*x^(n*(n+1)/2) / Product_{k=1..n} (1 - (n-k+1)*x^k).at n=14A204857
• a(1)=1, a(2)=2; thereafter, denoting x=a(n-1)+a(n-2), we have a(n)=3x+1 if x is odd, otherwise a(n)=x/2^m where 2^m is the maximal power of 2 dividing x.at n=15A276486
• G.f. A(x) satisfies: A(x) = 1/(1 + (-x)^a(0)/(1 + (-x)^a(1)/(1 + (-x)^a(2)/(1 + (-x)^a(3)/(1 + ...))))), a continued fraction.at n=20A307543