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!)
A255158 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1 1

%I #4 Feb 15 2015 10:46:29

%S 4105,27903,232685,1863728,15122739,124074113,1010639534,8227259834,

%T 67114117967,547056786780,4456616605691,36317305045035,

%U 295992187274808,2412175546896088,19657082576334996,160190127028086548

%N Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1

%C Column 7 of A255159

%H R. H. Hardin, <a href="/A255158/b255158.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%Y Cf. A255159

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 15 2015

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 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)