[seqfan] Re: A000984

[jean-paul allouche]

Hi, no actually (as noted by William Keith).
Easy counter-example: bbbaaa whose prefixes b, bb, bbb, bbba, bbbaa 
(i.e., all strict prefixes)
do contain more b's than a's.

best
jp


Le 07/05/14 16:57, Hans Havermann a écrit :
> I just added to https://oeis.org/A000984 this comment for review: "Number of distinct strings of length 2n using n letters A and n letters B." This isn't that far off from a previous comment: "Number of words on {a,b} of length 2n such that no prefix of the word contains more b's than a's." I'm not sure that I understand the latter. Can someone explain?
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/