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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A235738 Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1

%I #5 Aug 11 2014 22:46:08

%S 576,9710,160075,2423417,36199157,523547651,7519969703,106697433668,

%T 1509299904955,21253277135453,298927623301734,4197620035630914,

%U 58919872257393788,826569038954130084,11594164564872458891

%N Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

%C Column 2 of A235742

%H R. H. Hardin, <a href="/A235738/b235738.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A235738/a235738.txt">Empirical recurrence of order 78</a>

%F Empirical recurrence of order 78 (see link above)

%e Some solutions for n=3

%e ..2..0..2....1..1..0....0..1..0....1..1..2....1..0..2....0..0..1....2..0..1

%e ..1..1..0....0..2..0....2..0..2....2..0..2....2..1..2....0..2..1....1..2..0

%e ..2..0..2....1..0..1....0..1..1....0..0..0....0..1..0....1..2..0....0..0..2

%e ..0..1..1....2..2..1....0..0..1....2..2..0....1..1..1....2..0..0....2..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2014

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)