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a(n) = n + prime(n+1).
6

%I #15 Mar 26 2024 14:38:11

%S 4,7,10,15,18,23,26,31,38,41,48,53,56,61,68,75,78,85,90,93,100,105,

%T 112,121,126,129,134,137,142,157,162,169,172,183,186,193,200,205,212,

%U 219,222,233,236,241,244,257,270,275,278,283,290,293,304,311,318,325,328

%N a(n) = n + prime(n+1).

%C In sequence of odd primes add 1 to first prime, add 2 to 2nd prime, add 3 to 3rd prime and so on.

%t a[n_]:=Prime[n+1]+n (_Zak Seidov_, May 05 2005)

%t With[{nn=60},Prime[Range[2,nn+1]]+Range[nn]] (* _Harvey P. Dale_, Oct 02 2015 *)

%Y Essentially the same sequence as A095116.

%K nonn,easy

%O 1,1

%A _Mohammad K. Azarian_

%E More terms from _Erich Friedman_.