login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A226626 Irregular array read by rows. a(n) is the number of odd elements in the primitive Collatz-like 3x-k cycle associated with A226623(n). 9

%I #13 Sep 05 2013 07:56:38

%S 1,2,7,3,4,4,11,12,12,12,12,12,12,12,12,22,8,6,4,14,14,14,8,11,11,11,

%T 44,5,5,5,12,28,14,24,24,24,24,24,14,14,21,21,14,7,7,14,7,7,7,7,7,7,7,

%U 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,32,8

%N Irregular array read by rows. a(n) is the number of odd elements in the primitive Collatz-like 3x-k cycle associated with A226623(n).

%H Geoffrey H. Morley, <a href="/A226626/b226626.txt">Rows 1..280 of array, flattened</a>

%e The irregular array starts:

%e (k=1) 1, 2, 7;

%e (k=11) 3;

%e (k=17) 4, 4;

%e (k=19) 11;

%e a(4)=3 is the number of odd elements in the 3x-11 cycle {19,23,29,38} associated with A226623(4)=19

%Y Row n begins with a(A226628(n)) and has length A226629(n). k=A226630(n).

%Y The cycle associated with a(n) has length A226625(n) and its largest element is A226624(n).

%Y Cf. A226610, A226627, A226632, A226689.

%K nonn,tabf

%O 1,2

%A _Geoffrey H. Morley_, Jun 13 2013

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)