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A203656 T(n,k)=1/25 the number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements 8
9, 81, 81, 729, 1517, 729, 6561, 28057, 28057, 6561, 59049, 519445, 1116249, 519445, 59049, 531441, 9616161, 44577561, 44577561, 9616161, 531441, 4782969, 178019197, 1780968921, 3906948333, 1780968921, 178019197, 4782969, 43046721, 3295578857 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........9..........81.............729...............6561.................59049

.......81........1517...........28057.............519445...............9616161

......729.......28057.........1116249...........44577561............1780968921

.....6561......519445........44577561.........3906948333..........343812029649

....59049.....9616161......1780968921.......343812029649........67213191427593

...531441...178019197.....71156938905.....30292030417413.....13192335511091073

..4782969..3295578857...2843024036697...2669260624372937...2592476403527692089

.43046721.61009378085.113591039131161.235230466316286557.509649251749126118193

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..112

EXAMPLE

Some solutions for n=4 k=3

..1..1..1..0....2..4..1..4....3..1..1..3....3..0..4..4....0..3..4..0

..4..1..2..1....2..2..4..4....4..3..1..1....2..3..0..4....3..2..3..4

..0..4..1..4....1..2..2..4....3..1..0..1....4..2..3..0....2..2..2..3

..3..0..4..3....3..1..2..2....1..1..1..0....0..4..2..3....4..2..4..2

..4..3..0..4....2..3..1..2....4..1..1..1....0..0..4..2....2..4..3..4

CROSSREFS

Column 1 is A001019

Sequence in context: A209280 A014393 A008463 * A043087 A037414 A161147

Adjacent sequences:  A203653 A203654 A203655 * A203657 A203658 A203659

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 04 2012

STATUS

approved

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Last modified June 26 20:37 EDT 2019. Contains 324380 sequences. (Running on oeis4.)