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Revision History for A004601 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
Expansion of Pi in base 2 (or, binary expansion of Pi).
(history; published version)
#102 by Michael De Vlieger at Sun Oct 29 09:47:43 EDT 2023
STATUS

reviewed

approved

#101 by Joerg Arndt at Sun Oct 29 08:29:11 EDT 2023
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proposed

reviewed

#100 by Michel Marcus at Sun Oct 29 04:58:57 EDT 2023
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editing

proposed

#99 by Michel Marcus at Sun Oct 29 04:58:53 EDT 2023
LINKS

J. Leroy, M. Rigo, and M. Stipulanti, <a href="httphttps://www.combinatoricsdoi.org/ojs/index10.php/eljc/article/view37236/v24i1p446581">Behavior of Digital Sequences Through Exotic Numeration Systems</a>, Electronic Journal of Combinatorics 24(1) (2017), #P1.44. See w(n) in Example 19.

STATUS

approved

editing

#98 by Joerg Arndt at Thu Oct 19 08:58:59 EDT 2023
STATUS

editing

approved

#97 by Joerg Arndt at Thu Oct 19 08:58:47 EDT 2023
FORMULA

a(n) = -2*floor(Pi*2^(-4 + n)) + floor(Pi*2^(-3 + n)) for n > 1. - Mariusz Iwaniuk, Apr 28 2017

STATUS

approved

editing

#96 by Michael De Vlieger at Mon Jul 04 07:52:04 EDT 2022
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reviewed

approved

#95 by Wesley Ivan Hurt at Sun Jul 03 23:33:08 EDT 2022
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proposed

reviewed

#94 by Jon E. Schoenfield at Wed Jun 29 21:06:36 EDT 2022
STATUS

editing

proposed

#93 by Jon E. Schoenfield at Wed Jun 29 21:06:34 EDT 2022
MATHEMATICA

Table[ResourceFunction["NthDigit"][Pi, n, 2], {n, 1, 100}] (* Joan Ludevid, Jun 24 2022; easy to compute a(10000000)=0 with this function; requires Mathematica 12.0+ *)

STATUS

proposed

editing