A066557 Largest n-digit multiple of n.

9, 98, 999, 9996, 99995, 999996, 9999997, 99999992, 999999999, 9999999990, 99999999990, 999999999996, 9999999999990, 99999999999998, 999999999999990, 9999999999999984, 99999999999999990, 999999999999999990, 9999999999999999990, 99999999999999999980

Offset

1,1

Links

Harry J. Smith, Table of n, a(n) for n = 1..150

Formula

a(n) = floor((10^n-1)/n)*n.

Prog

(PARI) { for (n=1, 150, write("b066557.txt", n, " ", floor((10^n - 1)/n)*n) ) } \\ Harry J. Smith, Feb 22 2010

Crossrefs

Cf. A053041, A066558.

Sequence in context: A225608 A220490 A024115 * A289214 A121706 A306567

Adjacent sequences: A066554 A066555 A066556 * A066558 A066559 A066560

Keyword

nonn,base

Author

Amarnath Murthy, Dec 17 2001

Extensions

More terms and formula from Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 24 2001

Status

approved