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A226658
T(n,k)=Number of nXk 0..4 arrays of sums of 2X2 subblocks of some (n+1)X(k+1) binary array
3
5, 19, 19, 65, 205, 65, 211, 1795, 1795, 211, 665, 14221, 36317, 14221, 665, 2059, 106819, 636331, 636331, 106819, 2059, 6305, 778765, 10365005, 23679901, 10365005, 778765, 6305, 19171, 5581315, 162470155, 805351531, 805351531, 162470155
OFFSET
1,1
COMMENTS
Table starts
......5.........19...........65............211.............665............2059
.....19........205.........1795..........14221..........106819..........778765
.....65.......1795........36317.........636331........10365005.......162470155
....211......14221.......636331.......23679901.......805351531.....26175881341
....665.....106819.....10365005......805351531.....56294206205...3735873535339
...2059.....778765....162470155....26175881341...3735873535339.502757743028605
...6305....5581315...2495037197...831358677451.241600284318365
..19171...39606541..37898120011.26094426008221
..58025..279447619.572284920845
.175099.1965098125
.527345
LINKS
EXAMPLE
Some solutions for n=3 k=4
..1..1..1..0....0..1..1..1....0..1..1..0....1..0..1..1....1..0..2..3
..3..1..1..2....1..1..2..1....1..2..2..2....1..2..3..2....1..2..2..1
..3..2..2..3....3..1..2..3....2..1..2..3....2..3..2..1....3..3..1..0
CROSSREFS
Diagonal is A005333(n+1)
Staircase diagonal is A123281(n-3)
Column 1 is A001047(n+1)
Column 2 is A002501(n+1)
Column 3 is A002502(n+1)
Column 4 is A093732(n+1)
Column 5 is A093733(n+1)
Sequence in context: A169698 A211177 A260645 * A212153 A337401 A338127
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jun 14 2013
STATUS
approved