A094224 Number of digits in the least n-transposable number.

18, 28, 6, 6, 58, 22, 13, 44

Offset

2,1

Comments

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.

References

P. Tougne, "Jeux Mathématiques", Prob. 8, pp. 104 and 107 Aug. 1982 issue of Pour La Science (French edition of 'Scientific American'), Paris.

Links

Table of n, a(n) for n=2..9.

Example

We have the a(4)=6-digit 4-transposable number 410256=4*102564, and the a(5)=6-digit 5-transposable number 714285=5*142857.

Crossrefs

Cf. A092697 (value of the least n-transposable number).

Sequence in context: A349485 A166630 A154920 * A128858 A141782 A093648

Adjacent sequences: A094221 A094222 A094223 * A094225 A094226 A094227

Keyword

fini,full,nonn,base

Author

Lekraj Beedassy, May 28 2004

Extensions

Incorrect comments and program removed by Alois P. Heinz, Feb 18 2020

Status

approved