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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A216941 Number of side-5 hexagonal 0..n arrays with values nondecreasing E, SW and SE 1

%I #4 Sep 20 2012 15:37:09

%S 1256,618013,161114424,25604764159,2711219461532,203889639856012,

%T 11433160307353408,496806510016872628,17257106038907215436,

%U 491612998466197322739,11733465162246532370936,238892822839943208134857

%N Number of side-5 hexagonal 0..n arrays with values nondecreasing E, SW and SE

%C Row 5 of A216937

%H R. H. Hardin, <a href="/A216941/b216941.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=1

%e ..........0.0.0.1.1..................0.0.0.0.0

%e .........0.0.1.1.1.1................0.0.0.0.0.0

%e ........0.0.1.1.1.1.1..............0.0.0.0.0.0.0

%e .......0.1.1.1.1.1.1.1............0.0.0.0.0.0.1.1

%e ......1.1.1.1.1.1.1.1.1..........0.0.0.0.0.0.1.1.1

%e .......1.1.1.1.1.1.1.1............0.0.0.0.0.1.1.1

%e ........1.1.1.1.1.1.1..............0.0.0.1.1.1.1

%e .........1.1.1.1.1.1................0.1.1.1.1.1

%e ..........1.1.1.1.1..................1.1.1.1.1

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 20 2012

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 August 12 04:07 EDT 2024. Contains 375085 sequences. (Running on oeis4.)