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!)
 A220387 Majority value maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 2Xn array 1
 1, 7, 25, 79, 278, 966, 3362, 11642, 40375, 140102, 486191, 1686966, 5853300, 20309556, 70470311, 244518242, 848429087, 2943877082, 10214660764, 35442822154, 122979474647, 426714063696, 1480612045993, 5137426278616 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 2 of A220386 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 3*a(n-1) +4*a(n-3) +7*a(n-4) -7*a(n-6) -19*a(n-7) -21*a(n-8) -33*a(n-9) -14*a(n-10) +a(n-11) +6*a(n-12) +45*a(n-13) +27*a(n-14) +72*a(n-15) -a(n-16) +6*a(n-17) -32*a(n-18) -16*a(n-19) -4*a(n-20) +4*a(n-22) EXAMPLE Some solutions for n=3 ..1..0..0....1..1..1....0..0..0....0..0..1....0..0..1....0..0..1....1..1..0 ..0..0..1....1..0..0....1..1..1....0..0..0....0..1..1....1..1..1....1..1..1 CROSSREFS Sequence in context: A155295 A168589 A058481 * A155294 A155233 A183914 Adjacent sequences: A220384 A220385 A220386 * A220388 A220389 A220390 KEYWORD nonn AUTHOR R. H. Hardin Dec 13 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 November 26 17:30 EST 2022. Contains 358362 sequences. (Running on oeis4.)