login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213979 Conway's 92 Look and Say audioactive elements, generated in lexicographic order. 3
1112, 1112133, 111213322112, 111213322113, 1113, 11131, 111311222112, 111312, 11131221, 1113122112, 1113122113, 11131221131112, 111312211312, 11131221131211, 111312211312113211, 111312211312113221133211322112211213322112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

J. H. Conway, The weird and wonderful chemistry of audioactive decay, in T. M. Cover and Gopinath, eds., Open Problems in Communication and Computation, Springer, NY 1987, pp. 173-188.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..92

Kevin Watkins, Abstract Interpretation Using Laziness: Proving Conway's Lost Cosmological Theorem,

Kevin Watkins, Proving Conway's Lost Cosmological Theorem, POP seminar talk, CMU, Dec 2006

Eric Weisstein's World of Mathematics, Look and Say Sequence

Wikipedia, Look-and-say sequence

Reinhard Zumkeller, Haskell programs for Look and Say audioactive elements

PROG

(Haskell)  see Haskell link.

CROSSREFS

Cf. A119566, A215403.

Sequence in context: A154805 A203897 A236050 * A225351 A066484 A199982

Adjacent sequences:  A213976 A213977 A213978 * A213980 A213981 A213982

KEYWORD

nonn,fini,base

AUTHOR

Reinhard Zumkeller, Aug 09 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 20 05:37 EST 2020. Contains 331067 sequences. (Running on oeis4.)