A141127 - OEIS

%I #9 Mar 11 2019 03:06:51

%S 1,1,34,141,334,595,1012,1503,2192,2983,3786,4963,6304,7687,9518,

%T 11017,13122,15277,17760,20373,23312,26695,29742,33365,37338,41175,

%U 45580,50217,54762,59549,65332,71067,76712,82765,88692,95657,102814,110385

%N a(n) = prime(prime(n*n) - n*n) - n*n where prime(n) is the n-th prime.

%e a(1) = prime(prime(1*1) - 1*1) - 1*1 = prime(prime(1) - 1) - 1 = prime(2 - 1) - 1 = prime(1) - 1 = 2 - 1 = 1.

%e a(5) = prime(prime(5*5) - 5*5) - 5*5 = prime(prime(25) - 25) - 25 = prime(97 - 25) - 25 = prime(72) - 25 = 359 - 25 = 334.

%p p:=ithprime: seq(p(p(n^2)-n^2)-n^2,n=1..40); # _Emeric Deutsch_, Aug 16 2008

%Y Cf. A014689, A141129.

%K nonn

%O 1,3

%A _Juri-Stepan Gerasimov_, Jul 31 2008

%E Corrected and extended by _Emeric Deutsch_, Aug 16 2008