This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A180771 T(n,k)=half the number of nXk binary arrays with each element equal to at least one neighbor 11
 0, 1, 1, 1, 3, 1, 2, 11, 11, 2, 3, 34, 63, 34, 3, 5, 111, 390, 390, 111, 5, 8, 361, 2385, 4475, 2385, 361, 8, 13, 1172, 14621, 52186, 52186, 14621, 1172, 13, 21, 3809, 89602, 606546, 1154119, 606546, 89602, 3809, 21, 34, 12377, 549125, 7053923, 25448809, 25448809 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ..0.....1........1...........2.............3................5 ..1.....3.......11..........34...........111..............361 ..1....11.......63.........390..........2385............14621 ..2....34......390........4475.........52186...........606546 ..3...111.....2385.......52186.......1154119.........25448809 ..5...361....14621......606546......25448809.......1064583557 ..8..1172....89602.....7053923.....561487456......44560487654 .13..3809...549125....82032712...12387396391....1865051797753 .21.12377..3365327...953982820..273289411333...78060898850787 .34.40218.20624430.11094190209.6029284136868.3267207111743056 LINKS R. H. Hardin, Table of n, a(n) for n=1..264 CROSSREFS Sequence in context: A316176 A317458 A301615 * A300546 A300973 A300930 Adjacent sequences:  A180768 A180769 A180770 * A180772 A180773 A180774 KEYWORD nonn,tabl AUTHOR R. H. Hardin Sep 20 2010 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 23 07:51 EDT 2019. Contains 322381 sequences. (Running on oeis4.)