Fibonacci Collatz 2
koh
zbi74583 at boat.zero.ad.jp
Thu Sep 21 06:32:06 CEST 2006
Another Fibonacci Collatz sequence.
See A053521 and A053522
If we put A=1.5, B=1.5, C=1 then a Fibonacci like and Collatz like sequence is obtained.
a(n)=(1.5*a(n-2)+1.5*a(n-1)+1)/2^m , 2^m is the highest power of 2 dividing 1.5*a(n-2)+1.5*a(n-1)+1 .
I calculated it in the cases of several a(1),a(2) pairs.
1,1,1,1,1,....
1,3,7,1,13,11,37,73,83,235,....
1,5,5,1,5,5,1,5,5,....
1,7,13,31,67,37,....
1,9,1,1,1,....
1,11,19,23,1,37,29,25,41,25,25,19,67,65,199,397,895,....
They don't exist on OEIS.
The other way to make the sequence :
a(n)=(3*a(n-2)+1+3*a(n-1)+1)/2^m
=(1.5*a(n-2)+1.5*a(n-1)+1)/2^m
Yasutoshi
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