A261512 Largest n-digit lucky number.

9, 99, 997, 9999, 99987, 999987, 9999997, 99999979, 999999991, 9999999997, 99999999973, 999999999937, 9999999999999, 99999999999943, 999999999999993

Offset: 1

Author

Robert G. Wilson v, Aug 22 2015

Keywords

• nonn
• base
• more

Crossrefs

Cf. A000959, A003618.

Programs

Perl

use ntheory ":all"; for (1..12) { $n=10**$-1; $n-- while !is_lucky($n); say "$ $n"; } # Dana Jacobsen, Mar 07 2023

Extensions

a(11)-a(15) from Hiroaki Yamanouchi, Aug 24 2015