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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A285751 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. 1
 0, 4, 8, 44, 150, 540, 2042, 7760, 29654, 114336, 442152, 1713832, 6655764, 25893236, 100873154, 393455752, 1536357188, 6005069488, 23492496948, 91979426392, 360391230046, 1413045432264, 5543910852492, 21763924972776, 85487754197390 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 2 of A285750. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..0..0..1. .1..1..0..0. .0..1..0..0. .0..0..0..0. .1..1..0..0 ..0..0..0..0. .0..1..1..0. .1..1..0..0. .0..0..0..1. .0..1..0..0 CROSSREFS Cf. A285750. Sequence in context: A284972 A045639 A337782 * A189538 A270352 A183394 Adjacent sequences:  A285748 A285749 A285750 * A285752 A285753 A285754 KEYWORD nonn AUTHOR R. H. Hardin, Apr 25 2017 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 January 25 06:19 EST 2022. Contains 350565 sequences. (Running on oeis4.)