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Revision History for A068748

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Number of potential flows in n X n array with integer velocities in -1..1, i.e., number of n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.
(history; published version)

#8 by Jon E. Schoenfield at Sun Jul 30 22:24:04 EDT 2017

STATUS

editing

approved

#7 by Jon E. Schoenfield at Sun Jul 30 22:24:01 EDT 2017

NAME

Number of potential flows in n X n array with integer velocities in -1..1, i.e. , number of n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.

STATUS

approved

editing

#6 by Russ Cox at Sat Mar 31 12:34:59 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net), _, Feb 27 2002

Discussion

Sat Mar 31

12:34

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

#5 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), Feb 27 2002

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

KEYWORD

nonn,new

nonn

AUTHOR

Ron Hardin (rhhrhhardin(AT)cadenceatt.comnet), Feb 27 2002

#3 by N. J. A. Sloane at Wed Sep 22 03:00:00 EDT 2004

NAME

Potential Number of potential flows in n X n array with integer velocities in -1..1, i.e. number of n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.

KEYWORD

nonn,new

nonn

#2 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

CROSSREFS

By size 3x3-6x6 3 X 3, ..., 6 X 6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738.

KEYWORD

nonn,new

nonn

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Potential flows in n X n array with integer velocities in -1..1, i.e. n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.

DATA

1, 19, 1665, 690437, 1366395515, 12961320464027, 590771311004409091, 129585582154154757804255, 136932044780329080616264070553, 697547669137459516115242710064880165

OFFSET

1,2

CROSSREFS

By size 3x3-6x6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738.

KEYWORD

nonn

AUTHOR

Ron Hardin (rhh(AT)cadence.com), Feb 27 2002

STATUS

approved