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Primes squared of the form k + prime(k).
2

%I #25 Mar 11 2024 02:08:43

%S 49,529,1681,10609,26569,27889,72361,100489,109561,196249,214369,

%T 727609,863041,877969,1142761,1371241,1471369,1692601,1957201,2199289,

%U 2601769,2745649,3500641,3613801,3798601,3972049,4214809,5812921,6405961,7134241,7349521

%N Primes squared of the form k + prime(k).

%C Primes squared in A014688.

%H Tyler Busby, <a href="/A104935/b104935.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..106 from Zak Seidov)

%o (PARI) lista(nn) = {vec = vector(nn, i, i + prime(i)); pp = select(i->(issquare(i) && isprime(sqrtint(i))), vec); print(pp);} \\ _Michel Marcus_, Oct 09 2013

%Y Cf. A014688.

%Y Subsequence of A104992.

%K nonn

%O 1,1

%A _Zak Seidov_, Apr 25 2005

%E a(12) - a(16) from _Michel Marcus_, Oct 09 2013

%E a(17) onward from _Zak Seidov_, Mar 13 2014