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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A210785 Number of nX5 1..4 arrays with no element with value z exactly a city block distance of z from another element with value z 1
 497, 40038, 748627, 8039420, 98861559, 1663213556, 37591420090, 889827826226, 19000146172584, 357119485379094, 6660333940592922, 127334484690637704, 2571728358748562057, 51856792367440537602, 1045305735218927674440 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A210788 LINKS R. H. Hardin, Table of n, a(n) for n = 1..18 EXAMPLE Some solutions for n=4 ..2..1..3..3..2....3..3..3..4..4....2..1..3..1..3....3..4..3..1..4 ..1..4..3..1..2....1..3..4..1..4....4..3..4..2..1....4..1..4..3..1 ..4..4..4..4..1....4..1..2..4..1....3..4..3..1..4....1..4..2..1..3 ..1..2..2..1..3....1..4..1..3..2....1..3..1..3..1....2..3..1..3..1 CROSSREFS Sequence in context: A097785 A145922 A145981 * A064255 A067917 A093249 Adjacent sequences: A210782 A210783 A210784 * A210786 A210787 A210788 KEYWORD nonn AUTHOR R. H. Hardin Mar 26 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 6 20:19 EST 2023. Contains 367614 sequences. (Running on oeis4.)