A209858 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences

25, 182, 182, 1308, 2829, 1308, 9455, 43091, 43091, 9455, 68201, 661963, 1386131, 661963, 68201, 492373, 10137464, 45071990, 45071990, 10137464, 492373, 3553425, 155490654, 1460712837, 3111914707, 1460712837, 155490654, 3553425, 25648639

Offset

1,1

Comments

Table starts

.......25.........182...........1308..............9455................68201

......182........2829..........43091............661963.............10137464

.....1308.......43091........1386131..........45071990...........1460712837

.....9455......661963.......45071990........3111914707.........213959648565

....68201....10137464.....1460712837......213959648565.......31192434742293

...492373...155490654....47417927307....14741920546390.....4558499131132306

..3553425..2383064182..1538049629157..1014683000461958...665390868679472699

.25648639.36538359367.49909370504583.69877891568505574.97186568439693174719

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

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

Crossrefs

Sequence in context: A258319 A302562 A264259 * A209851 A330126 A243209

Adjacent sequences: A209855 A209856 A209857 * A209859 A209860 A209861

Keyword

nonn,tabl

Author

R. H. Hardin Mar 14 2012

Status

approved