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A090250 Least multiple of n such that deleting the first r most significant digits yields a number divisible by n-r, for r = 0 to n-2. 0
1, 12, 114, 1120, 11120, 111120, 1111180, 11111600, 111120840, 1111120840, 11111216600, 111111216600, 1111132216480, 11111171444240, 111111171444240, 1111111171444240, 11111111177210000, 111111111177210000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
a(5) = 11120, 5 divides 11120, 4 divides 1120, 3 divides 120, 2 divides 20.
MATHEMATICA
f[n_] := Block[{k = n*Ceiling[(10^n - 1)/(9n)]}, While[ Union[ Table[ Mod[ Mod[k, 10^j], j], {j, n}]] != {0}, k += n]; k]; Table[ f[n], {n, 18}] (* Robert G. Wilson v, Sep 24 2004 *)
CROSSREFS
a(n) >= R_n (A002275).
Sequence in context: A062386 A080602 A333299 * A199702 A307820 A154247
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 27 2003
EXTENSIONS
Edited, corrected and extended by Robert G. Wilson v, Sep 24 2004
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)