[seqfan] A comment in A001045

Klaus Brockhaus klaus-brockhaus at t-online.de
Sat Dec 5 01:14:21 CET 2009

%N A001045 Jacobsthal sequence (or Jacobsthal numbers): a(n) = a(n-1) + 
2a(n-2), with a(0) = 0, a(1) = 1.

has a comment

%C A001045 General form: k=2^n-k. [From .........., Dec 11 2008]

Can someone (the author?) please explain what this means?

Klaus Brockhaus

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