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A236996 Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
640000, 30233088, 1406076928, 80675315712, 4279521280000, 219711187058688, 11244238474313728, 700611776439386112, 40435085627883520000, 2290196951375479308288, 131119070760867387670528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A236997

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 140*a(n-1) -6176*a(n-2) +87040*a(n-3) +21476352*a(n-4) -3006689280*a(n-5) +132637949952*a(n-6) -1869301678080*a(n-7) -149335861886976*a(n-8) +20907020664176640*a(n-9) -922298283013963776*a(n-10) +12998193418642391040*a(n-11) +331760110214840320000*a(n-12) -46446415430077644800000*a(n-13) +2048950440686853816320000*a(n-14) -28876399993099701452800000*a(n-15)

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A257194 A257187 A254987 * A250884 A190574 A210010

Adjacent sequences:  A236993 A236994 A236995 * A236997 A236998 A236999

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 02 2014

STATUS

approved

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Last modified September 24 22:46 EDT 2021. Contains 347651 sequences. (Running on oeis4.)