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A226609 Irregular array read by rows. a(n) is the length of the primitive Collatz-like 3x+k cycle associated with A226607(n). 11

%I #10 Jun 19 2013 13:49:31

%S 2,3,5,5,27,27,4,6,14,4,24,8,8,8,8,8,8,8,7,31,11,5,5,43,16,8,5,17,65,

%T 65,23,8,8,6,6,6,20,11,18,28,7,7,7,7,7,38,29,12,6,28,28,10,10,10,10,

%U 10,10,6,66,24,30,10,10,27,27,27,27,27,12,60,15,38

%N Irregular array read by rows. a(n) is the length of the primitive Collatz-like 3x+k cycle associated with A226607(n).

%H Geoffrey H. Morley, <a href="/A226609/b226609.txt">Rows 1..2032 of array, flattened</a>

%e The irregular array starts:

%e (k=1) 2;

%e (k=5) 3, 5, 5, 27, 27;

%e (k=7) 4;

%e (k=11) 6, 14;

%e a(2)=3 is the length of the 3x+5 cycle {1,4,2} associated with A226607(2)=1.

%Y Row n begins with a(A226612(n)) and has length A226613(n).

%Y The cycle associated with a(n) has A226610(n) odd elements of which A226608(n) is the largest.

%Y Cf. A226611, A226625, A226670-A226672.

%K nonn,tabf

%O 1,1

%A _Geoffrey H. Morley_, Jun 13 2013

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