Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #9 Oct 08 2017 23:36:03
%S 1,1,1,2,1,1,1,3,2,1,1,2,3,3,4,2,1,1,1,2,1,6,3,3,1,7,4,2,1,1,2,4,2,3,
%T 9,6,3,3,2,7,7,8,4,2,1,1,1,3,1,2,5,4,6,5,6,4,3,12,6,3,3,3,1
%N First differences of A100290.
%H Robert Israel, <a href="/A292777/b292777.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A100290/a100290.png">Scatterplot of the first 10000 terms of the first difference of A100290</a>
%p filter:= n -> evalb(n mod (2^numboccur(1, convert(n, base, 2))-1) = 0):
%p A100290:= select(filter, [$1..1000]):
%p A100290[2..-1]-A100290[1..-2]; # _Robert Israel_, Oct 08 2017
%Y Cf. A100290.
%K nonn
%O 1,4
%A _N. J. A. Sloane_, Oct 08 2017