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A257858 An increasing sequence of integers for which the continued square root map (see A257574) produces the decimal expansion of Pi. 1

%I #7 Jun 18 2015 12:33:59

%S 6,10,19,27,29,32,42,45,56,67,75,94,109,122,138,144,151,152,172,181,

%T 194,204,205,232,256,290,316,325,346,380,412,446,478,511,520,533,580,

%U 584,617,623,654,658,661,682,734,773,823,836,865,903,954,979,997,1008,1059

%N An increasing sequence of integers for which the continued square root map (see A257574) produces the decimal expansion of Pi.

%H Chai Wah Wu, <a href="/A257858/b257858.txt">Table of n, a(n) for n = 1..1000</a>

%H Popular Computing (Calabasas, CA), <a href="/A257352/a257352.pdf">The CSR Function</a>, Vol. 4 (No. 34, Jan 1976), pages PC34-10 to PC34-11. Annotated and scanned copy.

%H Herman P. Robinson, <a href="/A257574/a257574.pdf">The CSR Function</a>, Popular Computing (Calabasas, CA), Vol. 4 (No. 35, Feb 1976), pages PC35-3 to PC35-4. Annotated and scanned copy.

%e sqrt(6) = 2.449489742783178

%e sqrt(6+sqrt(10)) = 3.0269254467476365

%e sqrt(6+sqrt(10+sqrt(19))) = 3.1287879095060176

%e sqrt(6+sqrt(10+sqrt(19+sqrt(27)))) = 3.140462825727146

%e sqrt(6+sqrt(10+sqrt(19+sqrt(27+sqrt(29))))) = 3.1414928066743406

%Y Cf. A257582, A257764, A257809.

%K nonn

%O 1,1

%A _Chai Wah Wu_, May 13 2015

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)