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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A283856 Number of nX7 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors. 1
 128, 13225, 901397, 72394838, 5724272337, 449942735521, 35481195059121, 2796411775700471, 220385420596755894, 17369615762718616468, 1368959249299809499467, 107892485834872661402986 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A283857. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=2 ..0..1..1..0..0..0..0. .1..1..1..0..0..0..1. .1..1..0..1..1..1..0 ..0..1..1..1..0..0..0. .0..0..1..0..1..0..0. .0..1..1..0..1..0..0 CROSSREFS Cf. A283857. Sequence in context: A001661 A264095 A239190 * A283414 A184760 A228985 Adjacent sequences:  A283853 A283854 A283855 * A283857 A283858 A283859 KEYWORD nonn AUTHOR R. H. Hardin, Mar 17 2017 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 January 25 04:34 EST 2022. Contains 350565 sequences. (Running on oeis4.)