The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A045511

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

A045511

Factorials having initial digit '3'.
(history; published version)

#17 by Susanna Cuyler at Sun Jul 19 02:13:17 EDT 2020

STATUS

proposed

approved

#16 by Michel Marcus at Sun Jul 19 02:05:35 EDT 2020

STATUS

editing

proposed

#15 by Michel Marcus at Sun Jul 19 02:05:26 EDT 2020

COMMENTS

Benford's law shows that this sequence will contain about (log 4 - log 3)/log 10 =~ 12% of factorials. [From __Charles R Greathouse IV_, Nov 13 2010]

STATUS

proposed

editing

#14 by Amiram Eldar at Sun Jul 19 01:53:54 EDT 2020

STATUS

editing

proposed

#13 by Amiram Eldar at Sun Jul 19 01:42:19 EDT 2020

FORMULA

a(n) = A000142(A045522(n)). - Amiram Eldar, Jul 19 2020

CROSSREFS

Cf. A000142.

STATUS

approved

editing

#12 by N. J. A. Sloane at Tue Feb 07 15:58:09 EST 2017

STATUS

editing

approved

#11 by N. J. A. Sloane at Tue Feb 07 15:58:07 EST 2017

CROSSREFS

For factorials with initial digit d (1 <= d <= 9) see A045509, A045510, A045511, A045516, A045517, A045518, A282021, A045519; A045520, A045521, A045522, A045523, A045524, A045525, A045526, A045527, A045528, A045529.

STATUS

approved

editing

#10 by N. J. A. Sloane at Tue Feb 07 14:40:13 EST 2017

STATUS

editing

approved

#9 by N. J. A. Sloane at Tue Feb 07 14:40:11 EST 2017

COMMENTS

Benford's law suggests shows that this sequence will contain about (log 4 - log 3)/log 10 =~ 12% of factorials. [From Charles R Greathouse IV, Nov 13 2010]

LINKS

<a href="/index/Be#Benford">Index entries for sequences related to Benford's law</a>

STATUS

approved

editing

#8 by Harvey P. Dale at Thu Jun 16 16:30:53 EDT 2016

STATUS

editing

approved