login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031145 Factorials with a record number of zeros. 2
1, 120, 5040, 479001600, 6402373705728000, 121645100408832000, 2432902008176640000, 1124000727777607680000, 15511210043330985984000000, 304888344611713860501504000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Michael De Vlieger, Table of n, a(n) for n = 0..59

EXAMPLE

From Alonso del Arte, May 19 2017: (Start)

Note that 5040 has two zeros, even though only one of them is a trailing zero.

Although 3628800 has one more zero than 362880, it still has as many zeros as 5040, and for that reason it is not in this sequence.

Thus the next term after 5040 is 479001600, which has four zeros. (End)

MATHEMATICA

Function[s, Map[Position[s, #][[1, 1]] &, Union@ FoldList[Max, s]]! ]@ Table[DigitCount[n!, 10, 0], {n, 28}] (* Michael De Vlieger, May 20 2017 *)

CROSSREFS

Cf. A031144 (indices of factorials), A027868.

Sequence in context: A072419 A246193 A246613 * A126245 A221435 A229636

Adjacent sequences:  A031142 A031143 A031144 * A031146 A031147 A031148

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Erich Friedman.

Name clarified by Alonso del Arte, May 19 2017

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 December 9 17:18 EST 2019. Contains 329879 sequences. (Running on oeis4.)