A088343 Records in A069862.

1, 2, 5, 9, 10, 22, 25, 26, 110, 998, 1158, 1410, 9860, 100270, 999100, 1005274, 1007044, 1055274, 1059163, 1063242, 1065027, 1083148, 1099446, 1103722, 1144506, 10146315, 99992456, 99997120, 101009312, 101924112, 102163463, 102706016

Offset

1,2

Comments

A069862 is the smallest k such that n divides the concatenation of numbers from (n+1) to (n+k), where (n+1) is on the most significant side. - Robert G. Wilson v, Nov 14 2003

Links

Table of n, a(n) for n=1..32.

Chuck Seggelin, Concatenation of Consecutive Integers.

Mathematica

f[n_] := Block[{k = n + 1}, d = k; While[ d != 0, k++; d = Mod[d*10^Floor[ Log[10, k] + 1] + k, n]]; k - n]; a = 0; Do[b = f[n]; If[b > a, a = b; Print[n, " = ", b]], {n, 1, 34500}]

Crossrefs

Cf. A069862, A088947.

Sequence in context: A224866 A348167 A159073 * A110781 A170838 A115248

Adjacent sequences: A088340 A088341 A088342 * A088344 A088345 A088346

Keyword

nonn,more,base

Author

N. J. A. Sloane, Nov 14 2003

Extensions

More terms from Robert G. Wilson v and Chuck Seggelin (chuck(AT)plastereddragon.com), Nov 14 2003

Edited by Charles R Greathouse IV, Apr 30 2010

a(29)-a(32) from Michael S. Branicky, Jul 29 2024

Status

approved