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 A212474 Number of 0..3 arrays of length 2*n+2 with sum no more than 3*n in any length 2n subsequence (=50% duty cycle) 1
 85, 1597, 27024, 445780, 7274268, 118029501, 1908601444, 30794657082, 496095308012, 7983014938756, 128351434757356, 2062286003105664, 33118464621596452, 531627920798750598, 8530886270887938488 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 3 of A212471 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..0....0....1....2....2....0....2....2....1....2....1....1....1....2....0....3 ..0....0....2....0....0....0....2....0....0....1....1....0....0....1....1....0 ..1....2....1....1....1....1....1....3....2....0....0....1....0....2....3....2 ..0....1....0....1....3....2....0....0....2....0....0....0....3....0....0....0 ..2....1....0....0....2....1....0....1....2....0....1....0....0....0....0....1 ..2....0....1....1....1....0....3....1....0....1....2....2....0....0....0....1 ..1....2....3....3....2....3....3....2....0....2....3....1....3....0....3....2 ..1....2....1....2....0....2....0....0....1....2....3....2....1....3....0....2 CROSSREFS Sequence in context: A166917 A206377 A008360 * A020310 A163692 A221339 Adjacent sequences:  A212471 A212472 A212473 * A212475 A212476 A212477 KEYWORD nonn AUTHOR R. H. Hardin May 17 2012 STATUS approved

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Last modified June 25 17:47 EDT 2019. Contains 324353 sequences. (Running on oeis4.)