The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A235973 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A235973

Number of (n+1) X (n+1) 0..2 arrays with the upper median equal to the lower median in every 2 X 2 subblock.
(history; published version)

#6 by Wesley Ivan Hurt at Fri Apr 28 13:55:48 EDT 2023

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Fri Apr 28 13:55:38 EDT 2023

NAME

Number of (n+1) X (n+1) 0..2 arrays with the upper median equal to the lower median in every 2X2 2 X 2 subblock.

COMMENTS

Diagonal of A235981.

CROSSREFS

Cf. A235981.

STATUS

approved

editing

#4 by R. H. Hardin at Fri Jan 17 17:03:07 EST 2014

STATUS

editing

approved

#3 by R. H. Hardin at Fri Jan 17 17:03:03 EST 2014

NAME

allocated for R. H. Hardin

Number of (n+1)X(n+1) 0..2 arrays with the upper median equal to the lower median in every 2X2 subblock

DATA

39, 1473, 143183, 46727365, 45610599689, 147068094657177, 1487588729246707713, 48486777403751460298381, 5004721415407427603880128041

OFFSET

1,1

COMMENTS

Diagonal of A235981

EXAMPLE

Some solutions for n=3

..1..0..1..1....0..0..2..1....0..0..0..1....0..2..1..2....0..1..2..2

..1..1..1..2....0..1..1..1....2..0..1..1....1..1..1..1....0..0..1..2

..0..2..0..1....0..0..1..0....1..1..1..2....1..0..1..1....0..1..1..1

..1..1..1..2....1..0..0..0....2..1..1..0....1..1..1..1....1..2..0..2

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 17 2014

STATUS

approved

editing

#2 by R. H. Hardin at Fri Jan 17 17:01:33 EST 2014

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Fri Jan 17 17:01:33 EST 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved