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 A242542 Number of length n+3 0..n arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..n introduced in 0..n order 1
 6, 32, 150, 690, 3311, 16968, 93103, 544920, 3386262, 22243902, 153850981, 1116625523, 8478969009, 67185160511, 554235206898, 4750165417926, 42219358673456, 388485398829204, 3695187060252009, 36282147267628868 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A242549 LINKS R. H. Hardin, Table of n, a(n) for n = 1..132 EXAMPLE Some solutions for n=4 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0 ..1....0....1....0....1....1....1....1....1....1....1....1....1....1....1....1 ..2....1....0....1....0....2....2....2....1....2....2....1....1....0....1....2 ..0....2....2....2....2....0....2....1....0....1....0....2....1....2....0....1 ..1....2....2....1....0....3....1....0....2....3....2....1....0....1....1....2 ..0....1....1....3....3....1....3....2....1....3....3....1....1....0....0....1 ..3....2....0....2....0....3....4....3....3....2....2....2....1....0....2....3 CROSSREFS Sequence in context: A245128 A121333 A243026 * A046725 A232331 A231992 Adjacent sequences:  A242539 A242540 A242541 * A242543 A242544 A242545 KEYWORD nonn AUTHOR R. H. Hardin, May 17 2014 STATUS approved

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Last modified December 7 20:39 EST 2021. Contains 349589 sequences. (Running on oeis4.)