The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A260493 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A260493

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001011
(history; published version)

#4 by R. H. Hardin at Mon Jul 27 08:30:58 EDT 2015

STATUS

editing

approved

#3 by R. H. Hardin at Mon Jul 27 08:30:54 EDT 2015

NAME

allocated for R. H. Hardin

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001011

DATA

48, 136, 868, 3603, 5848, 31078, 155232, 356236, 1433220, 8676027, 28104408, 96675895, 569988256, 2581001066, 9580891800, 49283809387, 267771460624

OFFSET

1,1

COMMENTS

Diagonal of A260501

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A260501

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jul 27 2015

STATUS

approved

editing

#2 by R. H. Hardin at Mon Jul 27 08:28:33 EDT 2015

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Mon Jul 27 08:28:33 EDT 2015

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved