a(n) = 6*b_6(n)+5, where b_6 lists the indices of zeros of the sequence A261306: u(n) = abs(u(n-1)-gcd(u(n-1),6*n-1)), u(1) = 1.

A186258

a(n) = 6*b_6(n)+5, where b_6 lists the indices of zeros of the sequence A261306: u(n) = abs(u(n-1)-gcd(u(n-1),6*n-1)), u(1) = 1.

Terms

    a(0) =17a(1) =101a(2) =461a(3) =2801a(4) =19553a(5) =136649a(6) =955841a(7) =6684749a(8) =46777229a(9) =327440609a(10) =2292083093a(11) =16044575777a(12) =112312028681a(13) =786179138273

External references