A235932 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the minimum plus the maximum unequal to the lower median plus the upper median in every 2X2 subblock

168, 1788, 1788, 18992, 51736, 18992, 201976, 1490648, 1490648, 201976, 2146656, 43061840, 116219056, 43061840, 2146656, 22822704, 1242490716, 9098402456, 9098402456, 1242490716, 22822704, 242602688, 35871300604, 710992703856

Offset

1,1

Comments

Table starts

......168........1788..........18992............201976...............2146656

.....1788.......51736........1490648..........43061840............1242490716

....18992.....1490648......116219056........9098402456..........710992703856

...201976....43061840.....9098402456.....1933270061800.......409779863760088

..2146656..1242490716...710992703856...409779863760088....235445769230526712

.22822704.35871300604.55608647673784.86959285831972868.135476886902905134748

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Formula

Empirical for column k:

k=1: a(n) = 82*a(n-2) +320*a(n-3) +144*a(n-4) -448*a(n-5) +64*a(n-6)

k=2: [order 17]

k=3: [order 70]

Example

Some solutions for n=2 k=4
..0..0..0..3..2....0..0..0..1..1....0..0..0..2..2....0..0..0..3..2
..0..2..0..0..2....2..0..1..3..0....0..2..0..0..2....2..0..3..1..1
..0..1..0..3..2....2..3..0..1..1....1..2..1..0..0....2..1..1..2..1

Crossrefs

Sequence in context: A303622 A263121 A216107 * A235926 A279725 A234730

Adjacent sequences: A235929 A235930 A235931 * A235933 A235934 A235935

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 17 2014

Status

approved