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%I #9 Nov 10 2019 20:27:29
%S 8,9,19,23,25,26,34,39,58,64,66,68,82,83,84,86,108,109,117,118,128,
%T 129,130,134,136,150,151,175,176,178,179,194,197,227,231,234,240,241,
%U 248,258,259,275,276,278,281,309,315,316,317,330,331,332,336,337,339,340
%N Numbers k such that m*2^k - 1 is prime for exactly one coefficient m in the range 0 <= m <= k.
%C For corresponding coefficient values see A061415.
%Y Cf. A061410, A061411, A061412, A061413, A061415.
%K nonn
%O 1,1
%A _Patrick De Geest_, May 15 2001
%E Name edited and Offset changed by _Jon E. Schoenfield_, Oct 26 2019
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