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 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A261111 Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101 1
 289, 790, 2902, 10268, 35934, 127038, 449132, 1582692, 5580762, 19696792, 69493124, 245136960, 864834010, 3051137218, 10764053222, 37974619476, 133971821170, 472641282700, 1667438793734, 5882591495818, 20753304044252 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A261113 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 2*a(n-1) -2*a(n-2) +17*a(n-3) +16*a(n-4) +45*a(n-5) +44*a(n-6) +a(n-7) -14*a(n-8) -72*a(n-9) -126*a(n-10) -168*a(n-11) +14*a(n-12) +436*a(n-13) +288*a(n-14) -354*a(n-15) -316*a(n-16) +132*a(n-17) +181*a(n-18) -2*a(n-19) -53*a(n-20) -25*a(n-21) -3*a(n-22) +a(n-23) +5*a(n-24) +2*a(n-25) +a(n-26) +a(n-27) for n>28 EXAMPLE Some solutions for n=4 ..0..0..1..0..1..0..1..0....1..0..1..0..0..0..1..0....0..1..0..0..0..1..0..0 ..0..1..0..0..0..1..0..0....0..1..0..1..0..1..0..1....0..0..1..0..1..0..1..0 ..1..0..1..0..1..0..1..0....0..0..1..0..1..0..0..0....0..1..0..1..0..1..0..1 ..0..1..0..1..0..1..0..1....0..1..0..1..0..1..0..1....1..0..0..0..1..0..1..0 ..1..0..1..0..0..0..1..0....1..0..1..0..0..0..1..0....0..1..0..1..0..1..0..0 ..0..0..0..1..0..1..0..0....0..0..0..1..0..1..0..0....0..0..1..0..0..0..1..0 CROSSREFS Cf. A261113 Sequence in context: A152852 A156572 A157990 * A218766 A188186 A112077 Adjacent sequences: A261108 A261109 A261110 * A261112 A261113 A261114 KEYWORD nonn AUTHOR R. H. Hardin, Aug 08 2015 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 11:28 EST 2022. Contains 358631 sequences. (Running on oeis4.)