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A207949 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically 9
2, 4, 4, 6, 16, 6, 9, 36, 36, 10, 12, 81, 102, 100, 16, 16, 144, 289, 370, 256, 26, 20, 256, 612, 1369, 1232, 676, 42, 25, 400, 1296, 3478, 5929, 4238, 1764, 68, 30, 625, 2340, 8836, 18172, 26569, 14406, 4624, 110, 36, 900, 4225, 18330, 55696, 98126, 117649 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

..2....4.....6......9......12.......16.......20........25........30.........36

..4...16....36.....81.....144......256......400.......625.......900.......1296

..6...36...102....289.....612.....1296.....2340......4225......6890......11236

.10..100...370...1369....3478.....8836....18330.....38025.....69420.....126736

.16..256..1232...5929...18172....55696...133812....321489....662256....1364224

.26..676..4238..26569...98126...362404..1007146...2798929...6501278...15100996

.42.1764.14406.117649..524104..2334784..7513176..24176889..63380130..166152100

.68.4624.49164.522729.2806686.15069924.56114310.208947025.617864520.1827049536

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..391

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

CROSSREFS

Column 1 is A006355(n+2)

Column 2 is A206981

Column 3 is A207249

Column 4 is A207854

Row 1 is A002620(n+2)

Row 2 is A030179(n+2)

Row 3 is A207118

Sequence in context: A208039 A207426 A207741 * A207346 A207895 A207467

Adjacent sequences:  A207946 A207947 A207948 * A207950 A207951 A207952

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved

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Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)