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A185849 Number of (n+1)X3 0..2 arrays with no 2X2 subblock diagonal sum less antidiagonal sum equal to any horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum 1
630, 11610, 215880, 4004914, 74358926, 1380412312, 25625942242, 475728999902, 8831529274288, 163950562398426, 3043616539513970, 56502397501376376, 1048923589807240594, 19472460036409387670, 361491250199327640676 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A185856

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n)=8*a(n-1)+106*a(n-2)+1154*a(n-3)+7341*a(n-4)+38354*a(n-5)+75897*a(n-6)+26908*a(n-7)+363811*a(n-8)-971504*a(n-9)-6880482*a(n-10)-1595117*a(n-11)+13890723*a(n-12)-50693559*a(n-13)-54673009*a(n-14)+185578667*a(n-15)-214035759*a(n-16)-910901251*a(n-17)+1570495381*a(n-18)+2337237818*a(n-19)-6890840995*a(n-20)-7626185862*a(n-21)+18279944018*a(n-22)+20105596552*a(n-23)-48993202848*a(n-24)-29327197968*a(n-25)+67685629696*a(n-26)+13126132416*a(n-27)-29811833984*a(n-28)-9414272512*a(n-29)-22788287488*a(n-30)+12806834176*a(n-31)+16026865664*a(n-32)-6554771456*a(n-33)-1887731712*a(n-34)+627769344*a(n-35)+55836672*a(n-36)

EXAMPLE

Some solutions for 5X3

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

..0..0..1....1..0..0....0..0..1....0..2..0....0..0..1....1..0..0....2..0..1

..2..1..0....2..2..1....1..2..0....0..2..1....0..2..0....2..1..0....0..1..1

..1..2..0....0..2..2....2..1..2....1..0..1....2..2..2....2..0..2....0..0..1

..1..2..2....1..1..0....0..0..0....2..2..2....0..2..2....1..2..2....1..2..2

CROSSREFS

Sequence in context: A171258 A234245 A234241 * A058832 A225390 A061163

Adjacent sequences:  A185846 A185847 A185848 * A185850 A185851 A185852

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 05 2011

STATUS

approved

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Last modified January 24 07:18 EST 2020. Contains 331189 sequences. (Running on oeis4.)