The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A016642 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A016642

Decimal expansion of log(19).
(history; published version)

#25 by R. J. Mathar at Mon Jun 10 07:52:32 EDT 2024

STATUS

editing

approved

#24 by R. J. Mathar at Mon Jun 10 07:52:24 EDT 2024

FORMULA

Equals 2*log(2)+log(5)-Sum_{k>=1} 1/(k*20^k). - R. J. Mathar, Jun 10 2024

STATUS

approved

editing

#23 by Amiram Eldar at Thu Mar 21 16:06:25 EDT 2024

STATUS

reviewed

approved

#22 by Hugo Pfoertner at Thu Mar 21 16:03:25 EDT 2024

STATUS

proposed

reviewed

#21 by Hugo Pfoertner at Thu Mar 21 16:03:18 EDT 2024

STATUS

editing

proposed

#20 by Hugo Pfoertner at Thu Mar 21 16:03:08 EDT 2024

EXTENSIONS

Fixed my PARI program, had -n Harry J. Smith, May 20 2009

STATUS

proposed

editing

#19 by Paolo Xausa at Thu Mar 21 09:47:06 EDT 2024

STATUS

editing

proposed

#18 by Paolo Xausa at Thu Mar 21 09:43:54 EDT 2024

MATHEMATICA

First[RealDigits[Log[19], 10, 100]] (* Paolo Xausa, Mar 21 2024 *)

STATUS

approved

editing

#17 by Charles R Greathouse IV at Wed May 15 01:31:16 EDT 2019

STATUS

editing

approved

#16 by Charles R Greathouse IV at Wed May 15 01:31:14 EDT 2019

LINKS

<a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

PROG

(PARI) { default(realprecision, 20080); x=log(19); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016642.txt", n, " ", d)); } \\ Harry J. Smith, May 17 2009

CROSSREFS

Cf. A016447 Continued fraction. - _Harry J. Smith_, May 17 2009

STATUS

approved

editing