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A269106 Number of nX5 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once. 1
756, 132300, 17593092, 2085484068, 232068730044, 24808345933548, 2579398703502996, 262780733311913580, 26357371124964908460, 2611360040338484328156, 256155579492309832819860 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A269109.
LINKS
FORMULA
Empirical: a(n) = 236*a(n-1) -19546*a(n-2) +707906*a(n-3) -13261621*a(n-4) +137719076*a(n-5) -784626841*a(n-6) +2025590366*a(n-7) +1091882414*a(n-8) -18874661724*a(n-9) +33829878231*a(n-10) +10605114324*a(n-11) -91783964484*a(n-12) +94503314304*a(n-13) -30762353664*a(n-14) for n>15
EXAMPLE
Some solutions for n=2
..2..1..3..1..0. .0..0..0..2..3. .3..3..1..0..1. .0..1..3..3..3
..0..1..1..0..2. .2..0..2..0..2. .2..1..3..1..1. .1..3..1..1..2
CROSSREFS
Cf. A269109.
Sequence in context: A269191 A269140 A269198 * A035853 A269286 A289570
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 19 2016
STATUS
approved

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)