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A074271 Previous term + prime(previous term). 12

%I #14 Jul 19 2015 01:16:40

%S 1,3,8,27,130,863,7554,84385,1165814,19408513,381328184,8690396907,

%T 226500350374,6671888768963,219904832427160,8040978338951561,

%U 323784549401655250,14264968083112608087

%N Previous term + prime(previous term).

%F a(1)=1; a(n)=a(n-1)+prime(a(n-1)).

%e a(4)=27 because a(3)=8, prime(8)=19 and 8+19=27.

%t se={1}; a=1; Do[b=a+Prime[a]; se=Append[se, b]; a=b, {i, 13}]; se

%t NestList[ Prime@# + # &, 1, 14] (* _Robert G. Wilson v_, Jul 17 2010 *)

%Y Cf. A007097, A179274. - _Robert G. Wilson v_, Jul 17 2010

%K nonn

%O 1,2

%A _Zak Seidov_, Sep 21 2002

%E a(15) from _Robert G. Wilson v_, Jul 17 2010

%E a(16)-a(18) from _Charles R Greathouse IV_, Mar 15 2011

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)