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A219418 Unchanging value maps: number of n X 5 binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 n X 5 array. 1
12, 160, 2121, 28154, 372560, 4934366, 65352789, 865523957, 11462977378, 151815415029, 2010639231109, 26628853182336, 352671832205165, 4670776468884680, 61859640739887596, 819267455394261112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A219421.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..39

FORMULA

Empirical: a(n) = 14*a(n-1) -17*a(n-2) +117*a(n-3) -355*a(n-4) +550*a(n-5) -1954*a(n-6) +1579*a(n-7) -1059*a(n-8) -1065*a(n-9) +1097*a(n-10) +8*a(n-11) -153*a(n-12) +45*a(n-13) -6*a(n-14) for n>15.

EXAMPLE

Some solutions for n=3:

..1..0..0..0..0....0..0..1..0..0....0..0..0..0..0....0..0..1..1..1

..0..0..0..0..1....1..0..0..1..1....0..0..0..1..0....0..0..1..0..0

..1..1..0..0..0....0..0..0..0..0....0..0..0..0..1....0..0..0..0..1

CROSSREFS

Sequence in context: A349154 A112719 A091019 * A098400 A208791 A019578

Adjacent sequences:  A219415 A219416 A219417 * A219419 A219420 A219421

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2012

STATUS

approved

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Last modified January 26 07:21 EST 2022. Contains 350573 sequences. (Running on oeis4.)