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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A254698 T(n,k)=Number of length n+4 0..k arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms 15
 22, 133, 34, 464, 267, 54, 1205, 1116, 552, 86, 2606, 3341, 2764, 1140, 136, 4977, 8142, 9507, 6808, 2310, 212, 8688, 17255, 25962, 26759, 16276, 4542, 334, 14169, 33048, 60634, 81390, 72271, 37204, 9106, 532, 21910, 58617, 126456, 208114, 242076 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ...22...133.....464.....1205.....2606......4977......8688......14169......21910 ...34...267....1116.....3341.....8142.....17255.....33048......58617......97882 ...54...552....2764.....9507....25962.....60634....126456.....242037.....433054 ...86..1140....6808....26759....81390....208114....469376.....962541....1831798 ..136..2310...16276....72271...242076....670372...1618264....3520845....7060672 ..212..4542...37204...183491...665256...1961608...4985336...11325573...23567212 ..334..9106...87892...489135..1954106...6255136..17080712...41376909...91273510 ..532.18498..211672..1335839..5903724..20574928..60483408..156403629..365868388 ..852.37742..512684..3667545.17914000..67894218.214599288..591634473.1465804300 .1367.77010.1241154.10039379.54038937.222047516.752272724.2204108901.5765156683 LINKS R. H. Hardin, Table of n, a(n) for n = 1..9999 FORMULA Empirical for column k: k=1: [linear recurrence of order 15] k=2: [order 49] k=3: [order 83] Empirical for row n: n=1: a(n) = (5/2)*n^4 + (20/3)*n^3 + (15/2)*n^2 + (13/3)*n + 1 n=2: a(n) = (4/5)*n^5 + (19/3)*n^4 + (34/3)*n^3 + (29/3)*n^2 + (73/15)*n + 1 n=3: [polynomial of degree 6] n=4: [polynomial of degree 7] n=5: [polynomial of degree 7] n=6: [polynomial of degree 7] n=7: [polynomial of degree 8] EXAMPLE Some solutions for n=4 k=4 ..1....2....3....2....0....3....4....0....3....4....4....1....3....4....4....2 ..0....0....0....2....4....0....2....4....1....0....3....4....3....1....1....3 ..4....2....2....3....0....4....3....1....1....4....3....0....0....0....3....4 ..1....2....2....2....3....2....4....1....3....2....3....1....2....0....3....3 ..3....3....2....4....0....2....3....1....1....2....1....1....2....0....3....3 ..1....3....4....2....0....4....3....2....1....3....3....3....4....1....3....3 ..1....2....0....2....0....2....3....1....0....1....3....1....2....2....3....3 ..2....2....4....0....1....4....2....4....2....3....3....0....2....0....3....0 CROSSREFS Sequence in context: A233060 A299520 A003778 * A041936 A254699 A183909 Adjacent sequences: A254695 A254696 A254697 * A254699 A254700 A254701 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 05 2015 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 April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)