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%I #11 Feb 11 2020 02:03:37
%S 0,1,2,3,4,11,18,23,64,105,134,373,612,781,2174,3567,4552,12671,20790,
%T 26531,73852,121173,154634,430441,706248,901273,2508794,4116315,
%U 5253004,14622323,23991642,30616751,85225144,139833537,178447502,496728541,815009580,1040068261,2895146102,4750223943,6061962064,16874148071,27686334078,35331704123
%N a(n) = sqrt(A299921(n)).
%H Joerg Arndt, <a href="/A301318/b301318.txt">Table of n, a(n) for n = 1..1000</a>
%F G.f.: x * (1 + 2*x + 3*x^2 - 2*x^3 - x^4) / (1 - 6*x^3 + x^6).
%o (PARI) concat( [0], Vec((1 + 2*x + 3*x^2 - 2*x^3 - x^4) / (1 - 6*x^3 + x^6) + O(x^66)))
%Y Cf. A299921.
%K nonn,easy
%O 1,3
%A _Joerg Arndt_, Mar 18 2018
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