The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A269493 Number of length-n 0..7 arrays with no repeated value differing from the previous repeated value by one. 1
 8, 64, 512, 4082, 32460, 257536, 2039274, 16120298, 127240496, 1003029086, 7897819380, 62124999480, 488250966838, 3834268407348, 30090123746866, 235994522394958, 1849892639767268, 14493867039521420, 113511139403772878 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A269494. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 35*a(n-1) -483*a(n-2) +3234*a(n-3) -9950*a(n-4) +7266*a(n-5) +16356*a(n-6) +1169*a(n-7) -487*a(n-8) -21*a(n-9) EXAMPLE Some solutions for n=5 ..6. .4. .3. .5. .4. .3. .5. .1. .0. .4. .3. .3. .0. .1. .0. .3 ..1. .5. .3. .5. .6. .7. .0. .3. .2. .0. .2. .1. .1. .2. .0. .6 ..1. .5. .2. .2. .4. .7. .2. .2. .2. .6. .5. .3. .7. .1. .0. .6 ..4. .6. .1. .4. .4. .1. .0. .3. .5. .0. .6. .6. .1. .4. .2. .0 ..6. .7. .2. .6. .7. .3. .2. .2. .2. .0. .0. .3. .2. .0. .1. .4 CROSSREFS Cf. A269494. Sequence in context: A269582 A269434 A269689 * A269775 A269655 A250360 Adjacent sequences: A269490 A269491 A269492 * A269494 A269495 A269496 KEYWORD nonn AUTHOR R. H. Hardin, Feb 28 2016 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 4 09:31 EDT 2023. Contains 365873 sequences. (Running on oeis4.)