The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A237949 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A237949

Number of (n+1) X (4+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
(history; published version)

#7 by Wesley Ivan Hurt at Tue May 04 14:24:07 EDT 2021

STATUS

proposed

approved

#6 by Wesley Ivan Hurt at Tue May 04 14:24:03 EDT 2021

STATUS

editing

proposed

#5 by Wesley Ivan Hurt at Tue May 04 14:23:50 EDT 2021

NAME

Number of (n+1) X (4+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

COMMENTS

Column 4 of A237951.

CROSSREFS

Cf. A237951.

STATUS

approved

editing

#4 by R. H. Hardin at Sun Feb 16 06:10:47 EST 2014

STATUS

editing

approved

#3 by R. H. Hardin at Sun Feb 16 06:10:44 EST 2014

LINKS

R. H. Hardin, <a href="/A237949/b237949.txt">Table of n, a(n) for n = 1..50</a>

#2 by R. H. Hardin at Sun Feb 16 06:10:28 EST 2014

NAME

allocated for R. H. Hardin

Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

DATA

50268, 945688, 17612024, 386513430, 7955118248, 171966060604, 3650074854108, 80156219654316, 1707964148016404, 36925068554778528, 793835282719330844, 17305654560457523958, 371564547082692396516, 8024430424508906885568

OFFSET

1,1

COMMENTS

Column 4 of A237951

EXAMPLE

Some solutions for n=1

..1..2..0..2..1....1..1..1..3..0....0..2..0..2..0....1..3..0..3..3

..0..2..0..3..1....2..3..3..2..2....2..3..3..2..2....0..1..2..2..0

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Feb 16 2014

STATUS

approved

editing

#1 by R. H. Hardin at Sun Feb 16 06:06:57 EST 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved