The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A228448 a(n) = floor(n!/3^n). 0
 1, 0, 0, 0, 0, 0, 0, 2, 6, 18, 61, 225, 901, 3905, 18226, 91134, 486048, 2754274, 16525645, 104662422, 697749481, 4884246371, 35817806721, 274603184861, 2196825478892, 18306878990770, 158659617920008, 1427936561280078, 13327407905280733, 128831609751047086 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 LINKS Table of n, a(n) for n=0..29. MATHEMATICA Table[Floor[n!/3^n], {n, 0, 30}] (* Harvey P. Dale, May 24 2018 *) PROG (Python) import math for n in range(99): print str(math.factorial(n)/(3**n))+', ', CROSSREFS Cf. A000142, A066979, A212309. Sequence in context: A150051 A148462 A123639 * A346490 A177473 A177471 Adjacent sequences: A228445 A228446 A228447 * A228449 A228450 A228451 KEYWORD nonn,less AUTHOR Alex Ratushnyak, Oct 27 2013 STATUS approved

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

Last modified June 15 19:43 EDT 2024. Contains 373410 sequences. (Running on oeis4.)