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 A236446 Number of (n+1)X(2+1) 0..3 arrays colored with the difference of the maximum and minimum in each 2X2 subblock 1
 2116, 25172, 280436, 3081484, 33804644, 372302304, 4107125100, 45253160716, 498239745892, 5488056222380, 60469751923916, 666180122487480, 7338126927909528, 80835303876178368, 890516979877141528 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A236451 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 36*a(n-2) +356*a(n-3) +4344*a(n-4) +20686*a(n-5) +29714*a(n-6) -31380*a(n-7) -97187*a(n-8) -8638*a(n-9) -75077*a(n-10) -613287*a(n-11) -385421*a(n-12) +493270*a(n-13) +214944*a(n-14) +4921728*a(n-15) +12218501*a(n-16) +5327294*a(n-17) -8969592*a(n-18) -18816047*a(n-19) -32373495*a(n-20) -51099082*a(n-21) -9749467*a(n-22) +62349330*a(n-23) +27150861*a(n-24) +15857513*a(n-25) +34953995*a(n-26) -21410588*a(n-27) -9398131*a(n-28) +10813876*a(n-29) -1372244*a(n-30) -440320*a(n-31) +788640*a(n-32) -207360*a(n-33) +8704*a(n-34) for n>37 EXAMPLE Some solutions for n=2 ..1..3..0....0..3..1....0..1..2....2..0..3....0..3..2....2..0..1....0..1..2 ..1..3..1....3..3..3....2..1..2....0..1..2....3..2..3....3..2..1....2..1..1 ..0..3..3....1..1..0....2..1..3....1..0..2....2..1..0....1..1..1....0..3..2 CROSSREFS Sequence in context: A246808 A217439 A067632 * A077731 A077733 A324170 Adjacent sequences: A236443 A236444 A236445 * A236447 A236448 A236449 KEYWORD nonn AUTHOR R. H. Hardin, Jan 26 2014 STATUS approved

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Last modified December 6 21:00 EST 2022. Contains 358648 sequences. (Running on oeis4.)