[seqfan] Nice variant on a variant of A030067

Eric Angelini Eric.Angelini at kntv.be
Fri Apr 30 19:03:36 CEST 2010

Hello SeqFans,

Another nice seq based on the ideas here (thank you Neil!):


S is self-describing: "The succession of the sums of odd rank terms is the sequence itself".

In other words: underline all terms of even rank in S; these rebuild S itself; an underlined term is the sum of its two immediate neighbours.

It seems that sooner or later the sequence will show every integer, positive or negative.



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