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A217937 Numbers achieving strength records in 3x+1 problem. 3

%I #4 Oct 21 2012 11:28:59

%S 1,63728127,13371194527,3743559068799,100759293214567,

%T 104899295810901231

%N Numbers achieving strength records in 3x+1 problem.

%H Eric Roosendaal, <a href="http://www.ericr.nl/wondrous/strengths.html">3x + 1 strength records</a>

%Y Cf. A217935, A217936, A217937.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Oct 21 2012

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Last modified March 28 03:28 EDT 2024. Contains 371235 sequences. (Running on oeis4.)