This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A202933 Number of (n+3) X 5 binary arrays with consecutive windows of four bits considered as a binary number nondecreasing in every row and column. 1
 83521, 113856, 153874, 206145, 273683, 359970, 468980, 605203, 773669, 979972, 1230294, 1531429, 1890807, 2316518, 2817336, 3402743, 4082953, 4868936, 5772442, 6806025, 7983067, 9317802, 10825340, 12521691, 14423789, 16549516, 18917726 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A202939. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = (1/5)*n^5 + (31/2)*n^4 + (781/3)*n^3 + 2874*n^2 + (589559/30)*n + 60719. Conjectures from Colin Barker, Jun 02 2018: (Start) G.f.: x*(83521 - 387270*x + 723553*x^2 - 679679*x^3 + 320618*x^4 - 60719*x^5) / (1 - x)^6. a(n) = 6*a(n-1) - 15*a(n-2) + 20*a(n-3) - 15*a(n-4) + 6*a(n-5) - a(n-6) for n>6. (End) EXAMPLE Some solutions for n=3: ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0 ..0..0..0..0..0....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....0..1..1..0..1....0..1..0..1..0 ..0..1..0..0..0....0..1..0..0..1....0..0..1..0..1....0..1..1..0..1 ..1..1..1..1..1....0..0..0..1..0....0..0..1..0..1....0..0..0..0..0 ..0..1..0..1..0....0..0..1..1..0....0..0..1..1..0....0..1..1..1..0 CROSSREFS Cf. A202939. Sequence in context: A233925 A032752 A104928 * A013885 A205197 A203395 Adjacent sequences:  A202930 A202931 A202932 * A202934 A202935 A202936 KEYWORD nonn AUTHOR R. H. Hardin, Dec 26 2011 STATUS approved

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

Last modified December 11 21:21 EST 2019. Contains 329937 sequences. (Running on oeis4.)