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 A238511 Number of (n+1)X(2+1) 0..3 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..3 introduced in row major order 1
 25, 401, 14407, 430504, 13398587, 413256106, 12771744135, 394537124897, 12189010788413, 376564621157074, 11633561391153531, 359406052601243460, 11103456404402492173, 343029107715954897545, 10597508186010294218619 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A238515 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 22*a(n-1) +277*a(n-2) +42*a(n-3) -3413*a(n-4) -576*a(n-5) +1877*a(n-6) +38722*a(n-7) -43921*a(n-8) -27402*a(n-9) +38409*a(n-10) -4968*a(n-11) -9432*a(n-12) +8640*a(n-13) +3456*a(n-14) EXAMPLE Some solutions for n=3 ..0..1..2....0..1..2....0..1..0....0..1..0....0..1..0....0..1..0....0..1..2 ..2..0..1....2..0..1....1..0..2....2..3..1....2..0..3....2..3..1....3..0..3 ..3..0..1....2..3..2....2..0..2....3..0..2....2..0..1....0..1..3....1..2..1 ..2..3..0....3..0..3....1..2..3....0..2..1....3..1..0....1..3..1....2..3..2 CROSSREFS Sequence in context: A028075 A042204 A028112 * A028064 A028061 A026561 Adjacent sequences: A238508 A238509 A238510 * A238512 A238513 A238514 KEYWORD nonn AUTHOR R. H. Hardin, Feb 27 2014 STATUS approved

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Last modified September 19 02:20 EDT 2024. Contains 376003 sequences. (Running on oeis4.)