a(n) = 10*b_10(n) + 9, where b_10 lists the indices of zeros of the sequence A261310: u(n) = abs(u(n-1) - gcd(u(n-1), 10n-1)), u(1) = 1.
A186263
a(n) = 10*b_10(n) + 9, where b_10 lists the indices of zeros of the sequence A261310: u(n) = abs(u(n-1) - gcd(u(n-1), 10n-1)), u(1) = 1.
Terms
- a(0) =29a(1) =269a(2) =2969a(3) =32609a(4) =357169a(5) =3928669a(6) =43213789a(7) =475113649a(8) =5226205969a(9) =57488152069a(10) =632360271769
External references
- oeis: A186263