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%I #2 Mar 30 2012 18:51:39
%S 5,17,129,4097,2097153,274877906945,2361183241434822606849,
%T 87112285931760246646623899502532662132737,
%U 59285549689505892056868344324448208820874232148807968788202283012051522375647233
%N Numbers one more than a power of 2 which are the sum of n consecutive numbers one more than a power of 2.
%F a(n) =2^(2^(n-2)+n-1)+1 = A000051(A005126(n-2)).
%e a(2)=5=2+3, a(3)=17=3+5+9, a(4)=129=5+9+17+33+65.
%K nonn
%O 2,1
%A _Henry Bottomley_, Nov 07 2002
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