A183262 - OEIS

%I #5 Mar 31 2012 12:35:50

%S 2,1,1,3,5,3,3,5,5,3,7,22,39,22,7,8,59,157,157,59,8,17,220,1074,1899,

%T 1074,220,17,26,696,6851,23285,23285,6851,696,26,55,2461,44684,284314,

%U 526941,284314,44684,2461,55,89,8369,295255,3534109,12358457,12358457

%N T(n,k)=Number of nXk binary arrays with the number of 0-1 adjacencies equal to the number of 0-0 adjacencies

%C Table starts

%C ..2.....1........3..........3.............7................8

%C ..1.....5........5.........22............59..............220

%C ..3.....5.......39........157..........1074.............6851

%C ..3....22......157.......1899.........23285...........284314

%C ..7....59.....1074......23285........526941.........12358457

%C ..8...220.....6851.....284314......12358457........553836104

%C .17...696....44684....3534109.....294747516......25285926227

%C .26..2461...295255...44666147....7119707510....1169152157882

%C .55..8369..1966032..568723429..173610143327...54566287853953

%C .89.29428.13171478.7296845360.4263303128795.2565099972100788

%H R. H. Hardin, <a href="/A183262/b183262.txt">Table of n, a(n) for n = 1..220</a>

%e Some solutions for 4X6

%e ..1..1..0..0..0..1....0..1..1..0..0..0....0..1..0..0..0..1....0..0..0..0..1..0

%e ..0..0..0..0..0..1....1..1..1..0..0..1....0..0..1..0..0..0....0..0..0..0..0..0

%e ..1..0..1..0..0..0....1..0..0..0..0..1....1..0..0..0..0..0....1..0..1..1..1..0

%e ..0..0..0..1..0..1....0..0..0..1..1..1....1..0..1..1..0..1....1..0..1..0..0..1

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Jan 03 2011