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%I #5 Jul 28 2015 21:53:56
%S 9,25,161,897,22529,106497,2228225,9961473,192937985,15569256449,
%T 66571993089,5085241278465,90159953477633,378231999954945,
%U 6614661952700417,477381560501272577,34011184385901985793
%N p*2^p + 1 where p is prime.
%e If p=3, then 3*2^3 + 1 = 25.
%t Table[p = Prime[n]; p*2^p + 1, {n, 17}] (* _Robert G. Wilson v_, Nov 04 2004 *)
%Y Cf. A098640.
%K nonn
%O 1,1
%A _Parthasarathy Nambi_, Oct 30 2004
%E More terms from _Robert G. Wilson v_, Nov 04 2004
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