The On-Line Encyclopedia of Integer Sequences (OEIS)

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Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 6 adjacent terms unique.
(history; published version)

#5 by Jon E. Schoenfield at Wed Apr 07 20:03:32 EDT 2021

STATUS

editing

approved

#4 by Jon E. Schoenfield at Wed Apr 07 20:03:31 EDT 2021

AUTHOR

R. H. Hardin , Dec 02 2008

STATUS

approved

editing

#3 by Russ Cox at Sat Mar 31 12:35:19 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Dec 02 2008

Discussion

Sat Mar 31

12:35

OEIS Server: https://oeis.org/edit/global/875

#2 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010

KEYWORD

nonn,new

nonn

AUTHOR

Ron R. H. Hardin (rhhardin(AT)att.net) Dec 02 2008

#1 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

NAME

Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 6 adjacent terms unique.

DATA

1, 2, 6, 24, 120, 720, 5040, 37632, 308112, 2746272, 27224416, 284363360, 3302559216, 41549730788, 545404481048, 7782225729912

OFFSET

1,2

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Dec 02 2008

STATUS

approved