login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A045511
Factorials having initial digit '3'.
18
362880, 3628800, 39916800, 355687428096000, 304888344611713860501504000000, 371993326789901217467999448150835200000000
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Benford's law shows that this sequence will contain about (log 4 - log 3)/log 10 =~ 12% of factorials. [Charles R Greathouse IV, Nov 13 2010]
LINKS
Table of n, a(n) for n=1..6.
Index entries for sequences related to Benford's law
FORMULA
a(n) = A000142(A045522(n)). - Amiram Eldar, Jul 19 2020
MATHEMATICA
Select[Range[100]!, First[IntegerDigits[#]]==3&] (* Harvey P. Dale, Jun 16 2016 *)
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.
Cf. A000142.
Sequence in context: A226888 A284206 A179736 * A029577 A179967 A133360
Adjacent sequences: A045508 A045509 A045510 * A045512 A045513 A045514
KEYWORD
nonn,base
AUTHOR
Jeff Burch
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified December 1 15:25 EST 2024. Contains 378301 sequences.
License Agreements, Terms of Use, Privacy Policy