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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A228743 Number of arrays of the median of three adjacent elements of some length 8 0..n array. 1
 50, 447, 2072, 6797, 17986, 41083, 84288, 159321, 282274, 474551, 763896, 1185509, 1783250, 2610931, 3733696, 5229489, 7190610, 9725359, 12959768, 17039421, 22131362, 28426091, 36139648, 45515785, 56828226, 70383015, 86520952 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A228740 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = (n+1)*(11*n^5+199*n^4+706*n^3+824*n^2+420*n+90)/90. Empirical: G.f. -x*(50+97*x-7*x^2-70*x^3+24*x^4-7*x^5+x^6) / (x-1)^7 . - R. J. Mathar, Sep 02 2013 EXAMPLE Some solutions for n=4 ..2..3..1..2..4..3..4..4..0..4..2..1..0..3..4..2 ..1..4..3..2..2..2..0..3..3..2..4..2..2..3..0..0 ..2..1..0..4..2..1..0..4..3..2..0..3..1..3..0..3 ..1..1..4..4..1..0..2..2..3..2..4..3..3..3..3..0 ..4..1..0..4..4..1..2..3..1..3..0..0..1..0..3..2 ..3..4..0..2..2..3..4..2..0..2..0..0..0..1..4..0 CROSSREFS Sequence in context: A293608 A111341 A222693 * A019561 A164757 A189415 Adjacent sequences:  A228740 A228741 A228742 * A228744 A228745 A228746 KEYWORD nonn AUTHOR R. H. Hardin, Sep 01 2013 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 May 18 21:17 EDT 2022. Contains 353824 sequences. (Running on oeis4.)