A151987 Number of legal starting configurations in the glass worms (or vers de verres) game with n glasses.

1, 1, 3, 13, 64, 404, 2135, 21077, 111459, 1261637, 10767866, 111804384, 659105457, 18705101130

Offset: 0

Author

Jacques Tramu, Mar 09 2009

Keywords

• nonn
• more

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

• 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.

Extensions

Offset corrected by Joseph Myers, Sep 07 2009

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