A219409 Unmatched value maps: number of nX7 binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..2 nX7 array

37, 4523, 398375, 35794147, 3227238239, 290895472306, 26219581585508, 2363313103579962, 213017529066100563, 19200373208853887323, 1730628931949055584941, 155990537505981270461154

Offset

1,1

Comments

Column 7 of A219410

Links

R. H. Hardin, Table of n, a(n) for n = 1..123

Formula

Empirical: a(n) = 37*a(n-1) +3825*a(n-2) +81558*a(n-3) +510200*a(n-4) -2139740*a(n-5) -24964195*a(n-6) +44570360*a(n-7) +423494493*a(n-8) -1028219843*a(n-9) -2247233985*a(n-10) +9983856169*a(n-11) -7627675319*a(n-12) -13359810842*a(n-13) +28791113562*a(n-14) -18765233198*a(n-15) +2128700109*a(n-16) +2355058186*a(n-17) -585137197*a(n-18) -134608755*a(n-19) +39387120*a(n-20) +3106800*a(n-21) -864000*a(n-22) for n>24

Example

Some solutions for n=3
..0..0..1..0..0..0..0....0..0..1..1..0..1..1....0..0..0..1..1..0..0
..0..0..1..0..1..0..0....0..0..0..0..0..0..1....0..1..0..0..0..1..0
..0..1..1..0..0..1..1....1..0..1..0..1..0..0....1..1..0..0..1..0..1

Crossrefs

Sequence in context: A139043 A305142 A125599 * A232302 A363871 A153166

Adjacent sequences: A219406 A219407 A219408 * A219410 A219411 A219412

Keyword

nonn

Author

R. H. Hardin Nov 19 2012

Status

approved