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A155819 a(n) = p(n+1)^2 + 2*p(n) + 1; p(n) is the n-th prime number and n >= 1. 0

%I

%S 14,32,60,136,192,316,396,568,888,1020,1432,1756,1932,2296,2904,3588,

%T 3840,4612,5176,5472,6388,7048,8088,9588,10396,10812,11656,12096,

%U 12988,16356,17416,19032,19596,22480,23100,24952,26884,28216,30264

%N a(n) = p(n+1)^2 + 2*p(n) + 1; p(n) is the n-th prime number and n >= 1.

%C All the terms are even.

%t #[[2]]^2+2#[[1]]+1&/@Partition[Prime[Range[40]],2,1] (* _Harvey P. Dale_, Jan 29 2021 *)

%o (PARI) a(n)=prime(n+1)^2+2*prime(n) + 1; \\ _Joerg Arndt_, Aug 07 2013

%K nonn,less

%O 1,1

%A Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 28 2009

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Last modified February 5 11:26 EST 2023. Contains 360084 sequences. (Running on oeis4.)