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A237060 Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal 1
81, 255, 826, 2823, 9815, 34996, 125469, 457125, 1664894, 6142099, 22586567, 84018940, 311018349, 1163797285, 4328792462, 16268051859, 60722854295, 228929149516, 856718666317, 3237411387189, 12138170248222, 45946152057331 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A237067

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) +20*a(n-2) -121*a(n-3) -85*a(n-4) +876*a(n-5) +42*a(n-6) -2664*a(n-7) +168*a(n-8) +3696*a(n-9) -144*a(n-10) -2176*a(n-11) +384*a(n-13)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A237067 A236782 A236791 * A340697 A237637 A237630

Adjacent sequences:  A237057 A237058 A237059 * A237061 A237062 A237063

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2014

STATUS

approved

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Last modified December 6 19:27 EST 2021. Contains 349567 sequences. (Running on oeis4.)