login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A265590 T(n,k)=Number of nXk 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two. 9
1, 1, 1, 1, 2, 3, 2, 84, 79, 16, 16, 1354, 9327, 2194, 125, 79, 38791, 927797, 1427680, 142675, 1296, 456, 905458, 82725668, 505822314, 308395359, 7604426, 16807, 2194, 22977880, 12404184853, 376251416588, 807767184602, 99770416100, 451816635 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

......1...........1.................1...................2..................16

......1...........2................84................1354...............38791

......3..........79..............9327..............927797............82725668

.....16........2194...........1427680...........505822314........376251416588

....125......142675.........308395359........807767184602....2435259956770588

...1296.....7604426.......99770416100.....938564405271330.8708917835881798394

..16807...451816635....38840832559548.1227457797882040471

.262144.25239520503.10692035281792418

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=3 k=4

..0..1..2..1....0..1..3..1....0..1..9.11....0..1..3..7....0..1..3..1

..3..4..5..1....3..4..3..1....3..1..3..7....3..2..3..7....9..5..3..1

..5..4..3.11....5..7..9.11....3..5..3.11...10..2..3.11....3..7..3.11

CROSSREFS

Column 1 is A000272.

Row 1 is A265173.

Sequence in context: A291489 A075121 A075108 * A260208 A242457 A190146

Adjacent sequences:  A265587 A265588 A265589 * A265591 A265592 A265593

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 10 2015

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 23 00:28 EST 2020. Contains 332157 sequences. (Running on oeis4.)