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

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A317216 Number of nXn 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 0
 0, 7, 133, 11378, 2762836, 2106680104, 4981964443017, 36636237693414092, 836922031617540197099 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A317222. LINKS EXAMPLE Some solutions for n=5 ..0..0..1..1..0. .0..0..0..0..0. .0..0..1..0..0. .0..0..1..0..0 ..0..1..1..1..0. .0..1..1..0..1. .0..1..1..1..0. .0..1..1..1..0 ..0..0..1..0..1. .1..0..1..1..1. .0..1..1..0..1. .0..1..1..1..1 ..1..0..0..1..0. .0..0..0..0..1. .0..1..1..1..1. .1..1..0..1..0 ..0..1..0..1..1. .0..1..0..0..1. .1..0..0..1..0. .0..1..0..1..1 CROSSREFS Cf. A317222. Sequence in context: A251577 A082164 A229464 * A119670 A003374 A001533 Adjacent sequences:  A317213 A317214 A317215 * A317217 A317218 A317219 KEYWORD nonn AUTHOR R. H. Hardin, Jul 23 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 November 30 02:42 EST 2020. Contains 338781 sequences. (Running on oeis4.)