login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A151987 Number of legal starting configurations in the glass worms (or vers de verres) game with n glasses. 4
1, 1, 3, 13, 64, 404, 2135, 21077, 111459, 1261637, 10767866, 111804384, 659105457, 18705101130 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Suggested by a question from Eric Angelini.

See the Sequence Fans Mailing List link and also the Angelini link for further information.

It is conjectured that a(n)~(n+1)^(n+1)/exp(n). [From Dennis Hou, May 05 2010]

LINKS

Table of n, a(n) for n=0..13.

Eric Angelini, Vers de verres (Glass worms)

E. Angelini, Vers de verres (Glass worms) [Cached copy, with permission]

Sequence Fans Mailing List, Discussion about Glass Worms

CROSSREFS

Cf. A151986.

Sequence in context: A200719 A065065 A020086 * A126149 A060927 A074537

Adjacent sequences:  A151984 A151985 A151986 * A151988 A151989 A151990

KEYWORD

nonn,more

AUTHOR

Jacques Tramu, Mar 09 2009

EXTENSIONS

Offset corrected by Joseph Myers, Sep 07 2009

a(9) to a(13) from Joseph Myers, Sep 08 2009

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified September 20 16:05 EDT 2017. Contains 292276 sequences.