The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A278018 Number of 5Xn 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1
 0, 1230, 121826, 14786448, 1772657688, 212235186204, 25411730935962, 3042585288805250, 364290594311156506, 43616685036230806738, 5222245347063515784452, 625261742374783468880692 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 5 of A278014. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..0..1..0. .0..1..2. .0..1..2. .0..1..2. .0..2..1. .0..1..2. .0..0..2 ..0..2..1. .0..0..0. .0..2..0. .1..2..0. .1..0..2. .0..0..0. .1..1..0 ..2..1..0. .1..2..1. .2..1..2. .0..0..1. .2..2..2. .0..1..0. .2..0..0 ..1..2..0. .0..1..0. .2..0..0. .1..2..1. .2..1..0. .2..2..1. .0..1..0 ..1..2..2. .0..1..2. .2..1..0. .0..1..1. .0..2..2. .0..1..1. .2..0..0 CROSSREFS Cf. A278014. Sequence in context: A368637 A250894 A251405 * A182721 A183881 A270540 Adjacent sequences: A278015 A278016 A278017 * A278019 A278020 A278021 KEYWORD nonn AUTHOR R. H. Hardin, Nov 08 2016 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 June 19 03:10 EDT 2024. Contains 373492 sequences. (Running on oeis4.)