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!)
 A205070 Number of (n+1)X7 0..1 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors 1
 1432, 386, 524, 784, 1232, 1984, 2752, 3936, 5728, 8288, 12160, 17872, 26240, 38512, 56480, 82744, 121280, 177648, 260448, 381528, 559488, 819728, 1201888, 1761224, 2581728, 3783824, 5545600, 8129368, 11912032, 17465728, 25586784, 37524656 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A205072 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 3*a(n-2) -2*a(n-6) -3*a(n-8) -3*a(n-10) -2*a(n-12) +a(n-14) +2*a(n-16) +9*a(n-18) +14*a(n-20) +17*a(n-22) +18*a(n-24) +17*a(n-26) +15*a(n-28) +10*a(n-30) +6*a(n-32) +3*a(n-34) +a(n-36) for n>41 EXAMPLE Some solutions for n=4 ..0..1..0..0..0..1..0....1..1..0..0..0..1..0....0..1..0..0..0..1..0 ..0..1..1..1..0..1..1....1..1..1..1..0..1..1....1..1..1..1..0..1..1 ..0..0..0..1..0..0..0....0..1..0..1..0..0..0....0..1..0..1..0..0..0 ..1..1..0..1..1..1..0....0..1..1..1..1..1..0....0..1..1..1..1..1..0 ..0..1..0..0..0..1..0....0..0..0..1..0..1..0....0..0..0..1..0..1..0 CROSSREFS Sequence in context: A147695 A151996 A208628 * A169822 A114083 A143475 Adjacent sequences: A205067 A205068 A205069 * A205071 A205072 A205073 KEYWORD nonn AUTHOR R. H. Hardin Jan 21 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 10 19:44 EST 2023. Contains 367717 sequences. (Running on oeis4.)