This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A304303 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero. 0
 1, 8, 77, 1137, 26548, 989406, 55773947, 4882896349, 654105710575 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A304310. LINKS EXAMPLE Some solutions for n=5 ..0..0..1..1..1. .0..1..1..0..0. .0..1..0..0..0. .0..0..0..1..1 ..0..1..1..1..0. .0..1..1..1..0. .1..1..0..0..1. .0..0..1..1..1 ..1..1..1..1..1. .0..1..1..0..0. .1..0..0..0..0. .0..1..1..1..1 ..0..1..1..0..0. .0..0..0..1..1. .0..0..0..1..1. .1..1..1..1..1 ..0..0..1..0..0. .0..0..0..0..1. .1..0..1..1..0. .1..1..1..1..0 CROSSREFS Cf. A304310. Sequence in context: A187638 A092661 A196071 * A074841 A272208 A136954 Adjacent sequences:  A304300 A304301 A304302 * A304304 A304305 A304306 KEYWORD nonn AUTHOR R. H. Hardin, May 10 2018 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 21 22:12 EDT 2019. Contains 322328 sequences. (Running on oeis4.)