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!)
A251790 Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7 1

%I

%S 44792,210582,1035154,6446816,46409346,302373278,2223220200,

%T 17491571986,133178140146,1057141576284,8545595928834,68440838650758,

%U 554321839680508,4510428417394990,36604951664296024,297856195560822024

%N Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7

%C Column 7 of A251791

%H R. H. Hardin, <a href="/A251790/b251790.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..3..3..3..3..2..3..3..3..3....2..1..1..2..1..2..1..2..1

%e ..3..3..3..3..3..3..3..2..3....2..3..3..3..3..3..3..3..3

%e ..2..3..3..3..3..2..3..3..3....0..0..0..0..1..0..0..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 08 2014

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 28 12:38 EST 2022. Contains 350656 sequences. (Running on oeis4.)