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!)
A212033 Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element at a city block distance of two, and containing the value n(n+1)/2-4 0

%I

%S 0,0,34,1651,39901,480914,3668669,20431909,90528036,337143876,

%T 1095367909,3187460809

%N Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element at a city block distance of two, and containing the value n(n+1)/2-4

%C Column 3 of A212036

%e Some solutions for n=4

%e ..0........0........0........0........0........0........0........0

%e ..1.2......1.2......1.2......0.1......1.2......1.2......1.2......1.2

%e ..3.4.5....3.4.5....3.4.5....2.1.0....1.3.3....3.2.0....3.4.5....3.4.0

%e ..2.0.6.7..6.7.7.2..6.0.5.4..3.4.5.6..4.0.5.6..4.5.3.6..6.0.2.7..2.5.6.3

%K nonn

%O 1,3

%A _R. H. Hardin_ Apr 27 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 8 18:58 EDT 2022. Contains 356016 sequences. (Running on oeis4.)