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 A208397 Number of 6Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
 122, 88574, 53466192, 33085555344, 20413586117376, 12599441934740388, 7776176148498498768, 4799354153334997638528, 2962097148583259021121408, 1828166808374593843302307296, 1128320137401532221612440868480 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A208392 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 483*a(n-1) +79374*a(n-2) +2325758*a(n-3) -116482840*a(n-4) -4495564268*a(n-5) +111405792720*a(n-6) +2919342926960*a(n-7) -84278449377440*a(n-8) -292603254712096*a(n-9) +29279534769068608*a(n-10) -369555641966430528*a(n-11) +1674749264072678656*a(n-12) +2156486801391239424*a(n-13) -44057404748132724736*a(n-14) +72097583624114731008*a(n-15) +455663058958407811072*a(n-16) -1247507020751283224576*a(n-17) -3007043688407624581120*a(n-18) +9354958262137561546752*a(n-19) +16366237761751490756608*a(n-20) -38560165649886912446464*a(n-21) -74672497584369523752960*a(n-22) +72558930328852457586688*a(n-23) +224968833273366480683008*a(n-24) +41691604839132475424768*a(n-25) -285907224003663252946944*a(n-26) -313784969927732142014464*a(n-27) -101581793844321214005248*a(n-28) +27613799564794291814400*a(n-29) +24843347713795943301120*a(n-30) +2744862767351536287744*a(n-31) -1217400666371817209856*a(n-32) -239668061369775685632*a(n-33) for n>37 EXAMPLE Some solutions for n=4 ..0..0..1..0....0..0..0..1....0..1..2..1....0..0..0..0....0..0..1..2 ..1..1..0..0....1..2..2..1....2..0..0..1....0..1..1..2....2..2..1..0 ..2..0..1..0....2..0..1..1....0..2..0..1....0..1..2..1....0..1..2..1 ..0..1..1..0....2..1..2..0....2..0..1..0....2..2..0..0....0..1..0..0 ..0..1..0..2....1..2..0..1....0..2..1..1....0..2..2..0....2..2..0..0 ..2..2..0..1....1..2..0..2....2..0..0..1....0..1..0..1....0..1..0..2 CROSSREFS Sequence in context: A208320 A208390 A282274 * A098129 A198603 A237640 Adjacent sequences:  A208394 A208395 A208396 * A208398 A208399 A208400 KEYWORD nonn AUTHOR R. H. Hardin Feb 25 2012 STATUS approved

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Last modified January 25 15:34 EST 2022. Contains 350572 sequences. (Running on oeis4.)