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 A243382 Number of length n+3 0..n arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..n introduced in 0..n order 1
 7, 35, 158, 715, 3406, 17366, 94907, 553807, 3433490, 22512257, 155472029, 1126989053, 8548807676, 67679513141, 557899676487, 4778535406628, 42448208962613, 390404810629273, 3711893438414835, 36432789329793687 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A243389 LINKS R. H. Hardin, Table of n, a(n) for n = 1..62 EXAMPLE Some solutions for n=3 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0 ..0....0....1....1....0....1....1....1....0....0....1....1....1....1....1....1 ..0....1....0....2....0....1....2....1....1....1....0....2....2....1....2....2 ..0....0....0....2....1....2....0....2....2....2....1....0....1....2....1....3 ..1....2....2....0....2....3....0....1....3....1....0....2....2....3....3....0 ..1....3....1....3....1....2....1....3....2....2....2....2....3....1....3....3 CROSSREFS Sequence in context: A171477 A265612 A005003 * A242577 A163348 A291237 Adjacent sequences:  A243379 A243380 A243381 * A243383 A243384 A243385 KEYWORD nonn AUTHOR R. H. Hardin, Jun 04 2014 STATUS approved

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Last modified April 19 13:00 EDT 2021. Contains 343114 sequences. (Running on oeis4.)