A039512 - OEIS

%I #6 Dec 19 2015 12:33:19

%S 1,3,1,5,19,23,187,347,5,7,9,1,11,13,1,13,131,211,227,251,259,283,287,

%T 319,3,15,57,69,561,1041,1,17,23,5,19,15,21,5,7,23,41,5,7,17,25,95,

%U 115,935,1735,27,1,11,29,3811,7055,13,31,3,33,39,7,13,17,25,35,133

%N T(n,1..i) are attractors in '3x+(2n+1)' problem.

%e 1; 3; 1,5,19,23,187,347; 5,7; 9; 1,11,13;...

%Y A039508 gives number of columns in each row. Cf. A039508-A039515.

%K nonn,tabf

%O 0,2

%A _Christian G. Bower_, Feb 15 1999