The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A019673 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A019673

Decimal expansion of Pi/6.
(history; published version)

#50 by Harvey P. Dale at Sat Oct 05 12:49:20 EDT 2024

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editing

approved

#49 by Harvey P. Dale at Sat Oct 05 12:49:16 EDT 2024

MATHEMATICA

RealDigits[Pi/6, 10, 120][[1]] (* Harvey P. Dale, Oct 05 2024 *)

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editing

#48 by Hugo Pfoertner at Thu Mar 21 06:35:35 EDT 2024

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#47 by Joerg Arndt at Thu Mar 21 05:53:13 EDT 2024

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#46 by Peter Bala at Wed Mar 20 13:38:42 EDT 2024

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#45 by Peter Bala at Sun Mar 17 15:23:13 EDT 2024

FORMULA

Pi/6 = Sum_{n >= 1} i/(n*P(n,sqrt(-3))*P(n-1,sqrt(-3))), where i = sqrt(-1) and P(n,x) denotes the n-th Legendre polynomial. The first ten terms of the series gives the approximation Pi/6 = 0.52359877559(52...) correct to 11 decimal places - Peter Bala, Mar 16 2024

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approved

editing

#44 by Charles R Greathouse IV at Thu Sep 08 08:44:44 EDT 2022

PROG

(MAGMAMagma) C<i> := ComplexField(); [Pi(C)/6]; // G. C. Greubel, Nov 18 2017

Discussion

Thu Sep 08

08:44

OEIS Server: https://oeis.org/edit/global/2944

#43 by Joerg Arndt at Sat Aug 15 06:21:33 EDT 2020

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#42 by Hugo Pfoertner at Sat Aug 15 04:44:35 EDT 2020

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#41 by Amiram Eldar at Sat Aug 15 04:12:56 EDT 2020

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