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# GLP's mathematicians let's develop the Da Yan Circle {17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17}

Anonymous Coward
User ID: 1138141
China
10/22/2010 06:34 AM
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GLP's mathematicians let's develop the Da Yan Circle {17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17}
Da Yan Circle if from a variant of the Collatz conjecture:

Take any natural number n. If n is even, divide it by 2 to get n / 2, if n is odd multiply it by 3 and subtract 1 to obtain 3n - 1. Repeat the process indefinitely.
We eventually reach these 3 circle:

{1,2,1}

{5,14,7,20,10,5}

{17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17}

the lastone is called Da Yan Circle.

someone use the Da Yan Circle {17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17} simulate the earth ,the north pole is 68,the south pole is 164. the actual period of rotation of the earth is 86,164 seconds. 61 at left ,74 at rigtht, above 61------74 is 182------25 ,(61+74)*(61+74) = 18225 and many intresting numbers in this circle.
Anonymous Coward (OP)
User ID: 1138141
China
10/22/2010 07:29 AM
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