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 A208198 Number of nX5 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors 1
 51, 41272, 39725054, 38372808893, 37069738362057, 35810971705853725, 34594950233928279876, 33420220819293699707599, 32285381308444124871905667, 31189077171790298063795540459, 30129999876244591484571731949842 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A208201 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 928*a(n-1) +38247*a(n-2) -1419908*a(n-3) -25003347*a(n-4) +1012531896*a(n-5) -9450054156*a(n-6) +24082844974*a(n-7) +80821917709*a(n-8) -489140400628*a(n-9) +403243304428*a(n-10) +1648713698424*a(n-11) -3331507779798*a(n-12) +632406681414*a(n-13) +2327643475767*a(n-14) -977046212844*a(n-15) -462110735853*a(n-16) +172474098336*a(n-17) +29511981612*a(n-18) -7270112880*a(n-19) for n>20 EXAMPLE Some solutions for n=4 ..0..0..0..1..0....0..0..0..0..0....0..1..0..0..0....0..1..1..0..0 ..0..1..1..0..2....0..1..0..2..0....1..0..0..1..0....0..2..0..0..2 ..2..1..2..2..2....1..0..2..0..1....1..0..2..3..1....1..1..3..1..0 ..0..1..3..1..3....2..1..3..0..0....3..2..2..1..1....0..1..0..2..3 CROSSREFS Sequence in context: A200798 A241117 A255832 * A208405 A208412 A198904 Adjacent sequences:  A208195 A208196 A208197 * A208199 A208200 A208201 KEYWORD nonn AUTHOR R. H. Hardin Feb 24 2012 STATUS approved

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Last modified September 23 03:22 EDT 2020. Contains 337291 sequences. (Running on oeis4.)