a(n) = 9*b_9(n) + 8, where b_9 lists the indices of zeros of the sequence A261309: u(n) = abs(u(n-1) - gcd(u(n-1), 9n-1)), u(1) = 1.
A186261
a(n) = 9*b_9(n) + 8, where b_9 lists the indices of zeros of the sequence A261309: u(n) = abs(u(n-1) - gcd(u(n-1), 9n-1)), u(1) = 1.
Terms
- a(0) =26a(1) =269a(2) =2699a(3) =26423a(4) =259829a(5) =2595473a(6) =25954289a(7) =259491059a(8) =2594910599a(9) =25949104721a(10) =259491047219
External references
- oeis: A186261