login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213851 Least m such that m!*2^m >= n! 2
1, 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 12, 12, 13, 14, 15, 16, 17, 18, 18, 19, 20, 21, 22, 23, 24, 24, 25, 26, 27, 28, 29, 30, 31, 31, 32, 33, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42, 43, 44, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 53, 54 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..1000

EXAMPLE

a(8) = 6 because (2^5)*5! < 8! <= (2^6)*6!.

MATHEMATICA

Table[m=1; While[n!>(2^m)*m!, m++]; m, {n, 1, 100}]

CROSSREFS

Cf. A094331.

Sequence in context: A053758 A303789 A145569 * A172475 A171970 A071377

Adjacent sequences:  A213848 A213849 A213850 * A213852 A213853 A213854

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jul 17 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 1 00:54 EDT 2020. Contains 337440 sequences. (Running on oeis4.)