[seqfan] Re: A086421 is duplicate of A000120 ?

N. J. A. Sloane njas at research.att.com
Mon Dec 12 17:20:10 CET 2011

Max, I think the best thing to do is to declare it

A086421 to be "Erroneous version of A000120"
and give it the keyword "dead".
I will do that.

Just for the record, here is the present version
in the internal format:

%S 0,1,1,2,1,2,2,3,1,2,3,2
%N Smallest k>=0 such that 2^(n-k) divides S(m,n) for all m>0 where S(m,n)=sum(i=0,m, i^n*C(m,i)).
%F It seems that a(2^j)=1, j>=0
%Y Cf. A001787, A001788, A058645, A058649.
%K more,nonn
%O 0,4
%A Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 07 2003

This will now vanish.

Thanks for noticing this.

 Best regards

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