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 A183740 Number of (n+1) X 2 0..2 arrays with equal numbers of 2 X 2 subblocks with sum over 4 and with sum under 4. 1
 19, 147, 1041, 10231, 76355, 639129, 5262685, 45272931, 382928623, 3284527183, 28183944013, 243625884229, 2108556673765, 18314858156217, 159384230179203, 1390406836401831, 12149636212862815, 106349025711686091 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A183748. LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for 3 X 2: ..0..0....2..2....1..1....2..2....0..2....2..2....1..0....2..2....1..0....2..0 ..0..2....1..1....2..0....1..0....1..1....0..1....0..2....0..2....1..2....2..1 ..2..1....0..1....1..1....1..1....1..1....1..1....2..2....1..0....0..1....0..0 ... ...M.......P.......E.......P.......E.......P.......M.......P.......E.......P... ...P.......M.......E.......M.......E.......M.......P.......M.......E.......M... CROSSREFS Sequence in context: A183748 A241620 A069423 * A162872 A157682 A153692 Adjacent sequences:  A183737 A183738 A183739 * A183741 A183742 A183743 KEYWORD nonn AUTHOR R. H. Hardin, Jan 06 2011 STATUS approved

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Last modified March 28 20:44 EDT 2020. Contains 333103 sequences. (Running on oeis4.)