[seqfan] Re: A puzzle from Emissary
mlb at well.com
Wed Nov 30 18:57:26 CET 2011
>="NJAS" <njas at research.att.com>
> Me: So consider the sequence
> a(n) = smallest number of steps needed to reach 1
Is the sequence
a(n) := number of powers of 2 that can be reached from n in just one step
a(n) := number of distinct values that can be reached in just one step
at all interesting?
I haven't been following the constructions closely enough, but given that
n=2^k can go to k+1 different powers of 2 I was wondering about other n.
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