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 A269580 Number of length-n 0..5 arrays with no repeated value differing from the previous repeated value by more than one. 1
 6, 36, 216, 1276, 7456, 43184, 248324, 1419502, 8074172, 45734140, 258127540, 1452448400, 8151217700, 45640705908, 255046211478, 1422758512212, 7924694792032, 44081166810484, 244913122501544, 1359313355233592 (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) = 20*a(n-1) - 146*a(n-2) + 440*a(n-3) - 328*a(n-4) - 470*a(n-5) - 76*a(n-6) + 5*a(n-7). Empirical g.f.: 2*x*(3 - 42*x + 186*x^2 - 214*x^3 - 200*x^4 - 26*x^5 + 2*x^6) / ((1 - 5*x)*(1 - 15*x + 71*x^2 - 85*x^3 - 97*x^4 - 15*x^5 + x^6)). - Colin Barker, Jan 24 2019 EXAMPLE Some solutions for n=6: ..3. .0. .4. .2. .1. .0. .5. .4. .0. .5. .5. .3. .4. .0. .0. .4 ..5. .4. .2. .3. .4. .5. .2. .0. .1. .4. .5. .0. .5. .4. .0. .3 ..1. .1. .5. .4. .1. .5. .1. .2. .0. .2. .2. .1. .2. .1. .1. .2 ..3. .0. .1. .2. .4. .2. .2. .1. .4. .1. .1. .1. .3. .5. .2. .1 ..4. .1. .0. .4. .5. .0. .0. .3. .5. .5. .3. .3. .4. .3. .1. .0 ..4. .3. .3. .2. .0. .2. .5. .0. .5. .1. .4. .2. .3. .3. .2. .3 CROSSREFS Column 5 of A269583. Sequence in context: A228737 A007274 A269616 * A269432 A269687 A269491 Adjacent sequences: A269577 A269578 A269579 * A269581 A269582 A269583 KEYWORD nonn AUTHOR R. H. Hardin, Mar 01 2016 STATUS approved

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Last modified September 29 16:58 EDT 2023. Contains 365773 sequences. (Running on oeis4.)