A078192 a(n) = floor(concatenation of n down to 1 divided by n).

1, 10, 107, 1080, 10864, 109053, 1093474, 10956790, 109739369, 1098765432, 100998877665, 10092582304526, 1009316229819563, 100937222213403880, 10094208074065843621, 1009463320069436728395, 100950083124771234567901, 10095341745173395054869684

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Formula

a(n) = floor(A000422(n) / n). - Sean A. Irvine, Jun 20 2025

Example

a(6) = floor(654321/6) = 109053.

Maple

a:= n-> floor(parse(cat(1+n-i$i=1..n))/n):
seq(a(n), n=1..19);  # Alois P. Heinz, Jun 20 2025

Mathematica

Table[Floor[FromDigits[Flatten[IntegerDigits/@Reverse[Range[n]]]]/n], {n, 20}] (* Harvey P. Dale, Jul 22 2012 *)

Crossrefs

Cf. A000422, A077147.

Sequence in context: A068097 A190956 A142987 * A238107 A015589 A163192

Adjacent sequences: A078189 A078190 A078191 * A078193 A078194 A078195

Keyword

base,nonn

Author

Amarnath Murthy, Nov 21 2002

Extensions

More terms from Jon E. Schoenfield, May 08 2010

Status

approved