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A225027 T(n,k) is the number of (n+1) X (k+1) 0..2 matrices with each 2 X 2 permanent equal. 9
81, 253, 253, 759, 1935, 759, 2653, 12641, 12641, 2653, 9273, 113261, 117959, 113261, 9273, 34545, 979821, 1930229, 1930229, 979821, 34545, 130067, 9045373, 23865033, 68599847, 23865033, 9045373, 130067, 502563, 82894903, 356942157, 1695172731 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
......81.........253............759..............2653.................9273
.....253........1935..........12641............113261...............979821
.....759.......12641.........117959...........1930229.............23865033
....2653......113261........1930229..........68599847...........1695172731
....9273......979821.......23865033........1695172731..........61256508583
...34545.....9045373......356942157.......52562324371........3420719145421
..130067....82894903.....4807268289.....1457105103421......144661440731701
..502563...768456167....69047521033....43215008345605.....7310039035972089
.1957855..7112825923...955759546369..1240053913896303...329657881472577779
.7707477.65968698193.13524243825173.36294561965670221.15990423886532132411
LINKS
FORMULA
Empirical: linear recurrences for columns k=1..4 are of order 12,30,36,87.
EXAMPLE
Some solutions for n=2 k=4
..2..2..1..0..2....2..0..2..0..2....0..2..0..0..0....1..1..0..2..2
..0..0..0..0..2....2..0..2..0..2....0..2..0..0..1....0..0..0..0..0
..2..0..2..0..1....1..0..0..0..2....0..0..0..0..0....1..2..0..2..1
CROSSREFS
Sequence in context: A237160 A236886 A206142 * A225020 A219131 A236789
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 24 2013
STATUS
approved

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Last modified March 4 10:03 EST 2024. Contains 370528 sequences. (Running on oeis4.)