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%I #10 Sep 08 2022 08:45:52
%S 1,5,2,11,6,19,10,27,14,39,20,49,28,57,32,69,42,79,48,91,52,101,60,
%T 113,72,127,76,135,80,143,96,163,104,173,114,187,120,201,128,213,138,
%U 223,148,237,152,245,164,271,178,279,182,291,188,305,202,319,212,329,218
%N a(n) = prime(n) + n*(-1)^n.
%H G. C. Greubel, <a href="/A176624/b176624.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) = A000040(n) + A038608(n+1).
%e a(1)=1 because prime(1) + 1*(-1)^1 = 1.
%p A176624 := proc(n) ithprime(n)+n*(-1)^n ; end proc: seq(A176624(n),n=1..120) ; # _R. J. Mathar_, Apr 27 2010
%t Table[Prime[n]+(-1)^n*n, {n,60}] (* _G. C. Greubel_, Jul 01 2021 *)
%o (Magma) [NthPrime(n) +(-1)^n*n: n in [1..60]]; // _G. C. Greubel_, Jul 01 2021
%o (Sage) [nth_prime(n) +(-1)^n*n for n in (1..60)] # _G. C. Greubel_, Jul 01 2021
%Y Cf. A000040, A038608, A176628.
%K nonn
%O 1,2
%A _Juri-Stepan Gerasimov_, Apr 22 2010
%E Entries checked by _R. J. Mathar_, Apr 27 2010