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A237102 Number of (n+1)X(2+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal 1
385, 3787, 39235, 435113, 4975145, 58074637, 685334343, 8138935643, 96985032775, 1157886143543, 13837852902565, 165468874704391, 1979225480289719, 23678093331580255, 283293856876960553, 3389604656842346969 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237108

LINKS

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

FORMULA

Empirical: a(n) = 27*a(n-1) -199*a(n-2) -477*a(n-3) +11775*a(n-4) -34928*a(n-5) -115926*a(n-6) +725374*a(n-7) -204577*a(n-8) -4749380*a(n-9) +6666884*a(n-10) +11629260*a(n-11) -27768844*a(n-12) -8069720*a(n-13) +48967980*a(n-14) -8687056*a(n-15) -41849680*a(n-16) +14177792*a(n-17) +17748896*a(n-18) -5169888*a(n-19) -4051136*a(n-20) +354688*a(n-21) +378816*a(n-22) +40320*a(n-23)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A200525 A225711 A204712 * A264421 A063390 A130612

Adjacent sequences:  A237099 A237100 A237101 * A237103 A237104 A237105

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2014

STATUS

approved

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Last modified September 26 16:06 EDT 2021. Contains 347668 sequences. (Running on oeis4.)