%I A120492
%S A120492 2,6,39,504,17765,552552,30870007,1387350084,103306557609,
%T A120492 16762578985600,1290073179870299,216632259853089564,
%U A120492 30312656885388018973,2922170957243151047352,378560698729260507690687
%N A120492 1 + Sum[ Prime[k]^(n-1), {k,1,n}].
%C A120492 Prime p divides a(p). n divides a(n) for n={1,2,3,4,5,6,7,9,10,11,12,
               13,17,19,22,23,29,31,37,41,43,45,47,...}.
%F A120492 a(n) = 1 + Sum[ Prime[k]^(n-1), {k,1,n}].
%t A120492 Table[1+Sum[Prime[k]^(n-1),{k,1,n}],{n,1,20}]
%Y A120492 Sequence in context: A118324 A060421 A054970 this_sequence A028300 A068207 
               A027161
%Y A120492 Adjacent sequences: A120489 A120490 A120491 this_sequence A120493 A120494 
               A120495
%K A120492 nonn
%O A120492 1,1
%A A120492 Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 04 2006