|
Search: id:A094224
|
|
|
| A094224 |
|
Number of digits in the least n-transposable number. |
|
+0 3
|
| |
|
|
OFFSET
|
2,1
|
|
|
COMMENT
|
A k-transposable number, where 2<=k<=9, is one which is equal to k times the number whose digits are a cyclic permutation of its leftmost digit to the right.
Corresponds to the least value m+1 such that 10*n-1 |10^m - n, or merely to the order of 10 mod (10*n-1). - Lekraj Beedassy (blekraj(AT)yahoo.com), Aug 21 2004
|
|
REFERENCES
|
P. Tougne, "Jeux Mathematiques", Prob. 8, pp. 104 and 107 Aug. 1982 issue of Pour La Science (French edition of 'Scientific American'), Paris.
|
|
LINKS
|
K. Matthews, Finding the order a (mod m)
|
|
EXAMPLE
|
We have the a(4)=6-digit 4-transposable number 410256=4*102564.
|
|
CROSSREFS
|
Sequence in context: A065751 A038632 A138336 this_sequence A128858 A117101 A063840
Adjacent sequences: A094221 A094222 A094223 this_sequence A094225 A094226 A094227
|
|
KEYWORD
|
fini,nonn,base
|
|
AUTHOR
|
Lekraj Beedassy (blekraj(AT)yahoo.com), May 28 2004
|
|
|
Search completed in 0.002 seconds
|