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Numbers n such that A140080(n) = 2.
4

%I #4 Mar 30 2012 18:54:36

%S 5,10,17,20,34,40,65,68,80,130,136,160,257,260,272,320,341,514,520,

%T 544,640,682,1025,1028,1040,1088,1109,1280,1301,1349,1361,1364,2050,

%U 2056,2080,2176,2218,2560,2602,2698,2722,2728,4097,4100,4112,4160

%N Numbers n such that A140080(n) = 2.

%Y Cf. A140080, A140137.

%K nonn

%O 1,1

%A _Nadia Heninger_ and _N. J. A. Sloane_, Jun 08 2008