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Revision History for A219741 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A219741 T(n,k) = Unmatched value maps: number of nXk binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 nXk array.
(history; published version)
#14 by Alois P. Heinz at Sun Aug 25 17:59:56 EDT 2013
STATUS

editing

approved

#13 by Alois P. Heinz at Sun Aug 25 17:59:52 EDT 2013
NAME

T(n,k)=) = Unmatched value maps: number of nXk binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 nXk array.

FORMULA

Zeilberger's Maple code (see links in A228285) would presumably give recurrences for the columns of this array. - . - _N. J. A. Sloane, _, Aug 22 2013

CROSSREFS

Column 1 is A005251(n+2)).

Column 2 is A002478(n+1)).

Column 3 is A105262(n+1) for n>1.

AUTHOR

_R. H. Hardin_ _, Nov 26 2012

STATUS

approved

editing

#12 by N. J. A. Sloane at Thu Aug 22 21:35:42 EDT 2013
STATUS

editing

approved

#11 by N. J. A. Sloane at Thu Aug 22 21:35:39 EDT 2013
CROSSREFS

DiagonalMain diagonal is A066864.

STATUS

approved

editing

#10 by N. J. A. Sloane at Thu Aug 22 21:29:45 EDT 2013
STATUS

editing

approved

#9 by N. J. A. Sloane at Thu Aug 22 21:29:41 EDT 2013
CROSSREFS

Diagonal is A066864.

See A226444 for an array with very similar entries. - N. J. A. Sloane, Aug 22 2013

STATUS

approved

editing

#8 by N. J. A. Sloane at Thu Aug 22 14:07:19 EDT 2013
STATUS

editing

approved

#7 by N. J. A. Sloane at Thu Aug 22 14:07:15 EDT 2013
FORMULA

Zeilberger's Maple code (see links in A228285) would presumably give recurrences for the columns of this sequencearray. - N. J. A. Sloane, Aug 22 2013

STATUS

approved

editing

#6 by N. J. A. Sloane at Thu Aug 22 14:06:39 EDT 2013
STATUS

editing

approved

#5 by N. J. A. Sloane at Thu Aug 22 14:06:36 EDT 2013
FORMULA

Zeilberger's Maple code (see links in A228285) would give recurrences for the columns of this sequence. - N. J. A. Sloane, Aug 22 2013

STATUS

approved

editing

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Last modified August 30 19:26 EDT 2024. Contains 375545 sequences. (Running on oeis4.)