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A179262 a(n) = 2*prime(n)^2 - 1. 2

%I

%S 7,17,49,97,241,337,577,721,1057,1681,1921,2737,3361,3697,4417,5617,

%T 6961,7441,8977,10081,10657,12481,13777,15841,18817,20401,21217,22897,

%U 23761,25537,32257,34321,37537,38641,44401,45601,49297,53137,55777

%N a(n) = 2*prime(n)^2 - 1.

%H Michael De Vlieger, <a href="/A179262/b179262.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = A079704(n) - 1 = 2*prime(n)^2 - 1. - _R. J. Mathar_, Jul 08 2010

%t Array[2 Prime[#]^2 - 1 &, 10^4] (* _Michael De Vlieger_, Oct 06 2019 *)

%Y Cf. A000040.

%K nonn,changed

%O 1,1

%A Frank Wals (frank.wals(AT)gmail.com), Jul 06 2010, Jul 09 2010

%E More terms from _R. J. Mathar_, Jul 08 2010

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Last modified October 15 12:31 EDT 2019. Contains 328026 sequences. (Running on oeis4.)