[seqfan] Re: Interesting property of A001151
davidwwilson at comcast.net
Sat Aug 20 01:27:17 CEST 2011
On 8/19/2011 5:54 PM, Maximilian Hasler wrote:
> do you really mean A001151 ?
> if so, I'm not sure what is your definition of block and/or element ?
> On Fri, Aug 19, 2011 at 5:38 PM, David Wilson<davidwwilson at comcast.net> wrote:
>> I believe that in A001151, there is no nonempty finite block of elements
>> followed immediately by the same block, e.g, you never see 1,1 or 1,2,1,2 or
>> 1,3,1,2,1,3,1,2 etc in the sequence.
>> However, if you prepend the sequence with any positive integer n, the first
>> 2^(n-1) elements are repeated.
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