The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A221061 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A221061

Equals one maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 nX5 array
(history; published version)

#4 by R. H. Hardin at Mon Dec 31 06:37:32 EST 2012

STATUS

editing

approved

#3 by R. H. Hardin at Mon Dec 31 06:37:28 EST 2012

LINKS

R. H. Hardin, <a href="/A221061/b221061.txt">Table of n, a(n) for n = 1..36</a>

#2 by R. H. Hardin at Mon Dec 31 06:37:13 EST 2012

NAME

allocated for R. H. Hardin

Equals one maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 nX5 array

DATA

16, 771, 29939, 1016831, 33166449, 1068217665, 34258980206, 1097126461548, 35117214077059, 1123846885246844, 35963963272764300, 1150849620849480116, 36826998226280362721, 1178454732768007507970, 37710221327188361829083

OFFSET

1,1

COMMENTS

Column 5 of A221062

EXAMPLE

Some solutions for n=3

..0..1..1..0..1....1..1..1..1..1....0..0..0..0..1....0..0..0..0..0

..1..0..0..0..1....0..0..0..1..0....0..0..1..0..0....0..1..0..0..0

..1..0..1..0..1....0..1..1..0..1....1..1..0..1..0....0..0..1..0..0

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin Dec 31 2012

STATUS

approved

editing

#1 by R. H. Hardin at Mon Dec 31 06:33:35 EST 2012

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved