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 A242236 Number of length n+5+1 0..5 arrays with every value 0..5 appearing at least once in every consecutive 5+2 elements, and new values 0..5 introduced in order. 1
 21, 51, 106, 211, 416, 821, 1626, 3231, 6411, 12716, 25221, 50026, 99231, 196836, 390441, 774471, 1536226, 3047231, 6044436, 11989641, 23782446, 47174451, 93574431, 185612636, 368178041, 730311646, 1448633651, 2873484856, 5699795261 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5) + a(n-6). Empirical g.f.: x*(21 + 30*x + 34*x^2 + 33*x^3 + 27*x^4 + 16*x^5) / (1 - x - x^2 - x^3 - x^4 - x^5 - x^6). - Colin Barker, Nov 01 2018 EXAMPLE Some solutions for n=5: ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0 ..1....1....1....0....1....1....1....1....1....1....0....1....1....1....1....1 ..2....0....0....1....2....2....2....2....2....2....1....2....2....2....0....2 ..3....2....2....2....0....0....3....3....3....3....2....0....3....1....2....3 ..2....3....3....3....3....3....4....0....4....4....3....3....3....3....3....4 ..4....4....4....4....4....4....5....4....1....0....4....4....4....4....4....2 ..5....5....5....5....5....5....1....5....5....5....5....5....5....5....5....5 ..0....2....1....0....1....2....0....1....0....1....1....1....0....0....0....0 ..1....1....0....2....2....1....3....3....2....2....0....0....1....4....1....1 ..3....0....0....1....1....0....2....2....3....4....5....2....2....2....5....3 ..3....3....2....4....0....5....1....0....2....3....2....5....3....1....2....5 CROSSREFS Column 5 of A242239. Sequence in context: A166150 A224334 A305002 * A235877 A146838 A146593 Adjacent sequences:  A242233 A242234 A242235 * A242237 A242238 A242239 KEYWORD nonn AUTHOR R. H. Hardin, May 08 2014 STATUS approved

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Last modified June 21 04:10 EDT 2021. Contains 345354 sequences. (Running on oeis4.)