Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A071070
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A071070 Minimal set of composite-strings in base 10. +0
11
4, 6, 8, 9, 10, 12, 15, 20, 21, 22, 25, 27, 30, 32, 33, 35, 50, 51, 52, 55, 57, 70, 72, 75, 77, 111, 117, 171, 371, 711, 713, 731 (list; graph; listen)
OFFSET

1,1

COMMENT

Any composite number contains in its digits at least one of the term of this sequence and there is no smaller set.

REFERENCES

J. Shallit, Minimal primes, in J.Recreational Mathematics, vol. 30.2, pp. 113-117,1999-2000

J.-P. Delahaye, "Pour la science", (French edition of Scientific American), Juin 2002, p. 99

LINKS

J. Shallit, Minimal primes, J. Recreational Mathematics, vol. 30.2, pp. 113-117, 1999-2000.

CROSSREFS

Cf. A071062, A071071, A071072, A071073.

Sequence in context: A066071 A067013 A141607 this_sequence A047820 A034878 A116661

Adjacent sequences: A071067 A071068 A071069 this_sequence A071071 A071072 A071073

KEYWORD

fini,full,nice,nonn,base

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), May 26 2002

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


AT&T Labs Research