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 A236654 Number of (n+1)X(1+1) 0..3 arrays colored with the sum of the upper and lower median values of each 2X2 subblock 1
 256, 2896, 32424, 370352, 4235056, 48229536, 549313480, 6261494544, 71367397200, 813298398848, 9268602995176, 105631275036528, 1203833778123600, 13719487336424928, 156354509776304744, 1781900315719572176 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A236657 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 32*a(n-2) +510*a(n-3) +4422*a(n-4) +20562*a(n-5) +76184*a(n-6) +152730*a(n-7) -90401*a(n-8) -1395282*a(n-9) -5373988*a(n-10) -8188928*a(n-11) +9036688*a(n-12) +47478176*a(n-13) +64503872*a(n-14) +4474624*a(n-15) -119940096*a(n-16) -162693120*a(n-17) -71368704*a(n-18) EXAMPLE Some solutions for n=3 ..2..2....2..0....0..0....2..1....0..0....3..2....1..2....3..2....3..2....1..2 ..1..0....0..2....1..2....2..3....3..2....3..2....2..0....1..1....0..2....1..3 ..0..3....3..1....1..0....3..2....2..0....1..1....2..0....3..1....3..3....1..3 ..1..3....3..1....2..3....1..0....1..2....3..3....2..3....0..3....1..1....2..0 CROSSREFS Sequence in context: A235582 A236657 A235579 * A236198 A236195 A236592 Adjacent sequences: A236651 A236652 A236653 * A236655 A236656 A236657 KEYWORD nonn AUTHOR R. H. Hardin, Jan 29 2014 STATUS approved

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Last modified June 8 14:02 EDT 2023. Contains 363165 sequences. (Running on oeis4.)