The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183517 T(n,k)=Number of nXk binary arrays with each element equal to either the sum mod 2 of its horizontal and vertical neighbors or the sum mod 2 of its diagonal and antidiagonal neighbors 9
 1, 2, 2, 3, 4, 3, 4, 11, 11, 4, 6, 24, 37, 24, 6, 9, 56, 138, 138, 56, 9, 13, 121, 427, 736, 427, 121, 13, 19, 272, 1444, 3504, 3504, 1444, 272, 19, 28, 612, 4903, 18288, 24194, 18288, 4903, 612, 28, 41, 1373, 16506, 94376, 182372, 182372, 94376, 16506, 1373, 41, 60 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ..1....2......3........4.........6...........9...........13...........19 ..2....4.....11.......24........56.........121..........272..........612 ..3...11.....37......138.......427........1444.........4903........16506 ..4...24....138......736......3504.......18288........94376.......490864 ..6...56....427.....3504.....24194......182372......1381491.....10466773 ..9..121...1444....18288....182372.....2075747.....23569130....267932379 .13..272...4903....94376...1381491....23569130....401449253...6843217545 .19..612..16506...490864..10466773...267932379...6843217545.174957270750 .28.1373..55852..2559872..79423818..3051705052.116932875870 .41.3082.187749.13257792.600709200.34604189072 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for 4X3 ..1..0..0....0..1..1....1..0..0....0..1..1....0..0..0....1..1..1....0..0..0 ..0..1..0....0..0..0....1..1..0....1..1..0....0..0..0....1..1..1....1..0..1 ..0..0..0....0..1..1....1..0..0....0..0..0....0..1..0....1..0..0....1..0..1 ..1..1..0....1..1..0....0..0..0....0..1..1....0..0..1....0..1..0....0..0..0 CROSSREFS Column 1 is A000930(n+1) Sequence in context: A084192 A129595 A094508 * A080046 A047675 A187199 Adjacent sequences:  A183514 A183515 A183516 * A183518 A183519 A183520 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 05 2011 STATUS approved

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.

Last modified April 22 07:26 EDT 2021. Contains 343163 sequences. (Running on oeis4.)