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A209922 Position of negative values in A209661 and A209662. 5


%S 5,10,13,15,17,20,26,29,30,34,35,37,39,40,41,45,51,52,53,55,58,60,61,

%T 68,70,73,74,78,80,82,87,89,90,91,95,97,101,102,104,105,106,109,110,

%U 111,113,115,116,117,119,120,122,123,125,135,136,137,140,143,146,148,149

%N Position of negative values in A209661 and A209662.

%C Absolute values of the negative terms of A209662. Sequence related to an infinite series which is equal to pi, due to Leonhard Euler.

%H Ray Chandler, <a href="/A209922/b209922.txt">Table of n, a(n) for n = 1..10000</a>

%Y Complement of A209921.

%Y Cf. A000796, A209661, A209662.

%K nonn

%O 1,1

%A _Omar E. Pol_, Mar 15 2012

%E 34, 105, 115 inserted by _Ray Chandler_, Mar 19 2016

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Last modified May 19 10:50 EDT 2019. Contains 323390 sequences. (Running on oeis4.)