

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


11



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
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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



