A208501 - OEIS

A208501

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically.

2, 4, 4, 6, 16, 6, 10, 36, 36, 9, 16, 100, 60, 81, 13, 26, 256, 144, 126, 169, 19, 42, 676, 324, 324, 234, 361, 28, 68, 1764, 756, 828, 650, 456, 784, 41, 110, 4624, 1728, 2124, 1794, 1406, 896, 1681, 60, 178, 12100, 3996, 5436, 4992, 4104, 3024, 1722, 3600, 88

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Table starts

..2....4....6...10....16....26.....42......68.....110......178......288

..4...16...36..100...256...676...1764....4624...12100....31684....82944

..6...36...60..144...324...756...1728....3996....9180....21168....48708

..9...81..126..324...828..2124...5436...13932...35676....91404...234108

.13..169..234..650..1794..4992..13806...38376..106236...295074...817362

.19..361..456.1406..4104.12654..37430..114494..341012..1037552..3103650

.28..784..896.3024..9912.33488.111328..374416.1249472..4192384.14013664

.41.1681.1722.6150.21976.79376.286754.1037300.3752320.13577396.49125954

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..1253

EXAMPLE

Some solutions for n=4 k=3

..1..0..0....0..1..1....0..1..0....1..0..0....0..1..0....1..1..0....1..0..1

..1..0..0....1..0..0....1..1..0....0..1..0....0..1..1....1..0..0....1..1..1

..0..1..0....1..1..0....1..0..1....1..1..0....1..0..1....0..1..1....0..1..0

..1..1..0....0..1..1....0..1..1....1..0..0....1..1..0....0..1..1....1..0..1

CROSSREFS

Column 1 is A000930(n+3)

Column 2 is A207170

Row 1 is A006355(n+2)

Row 2 is A206981

Row 3 is A207590

Sequence in context: A208379 A207453 A208287 * A207589 A208069 A208840

Adjacent sequences: A208498 A208499 A208500 * A208502 A208503 A208504

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 27 2012

STATUS

approved