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A209104
Number of 5Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors
1
41, 4568, 407832, 34538488, 2896732704, 242632290432, 20321585350224, 1702054356798544, 142558373809744128, 11940239726878790824, 1000077375423933174600, 83763383343364383999032
OFFSET
1,1
COMMENTS
Row 5 of A209100
LINKS
FORMULA
Empirical: a(n) = 171*a(n-1) -10470*a(n-2) +325569*a(n-3) -5715687*a(n-4) +56148167*a(n-5) -245912801*a(n-6) -484495146*a(n-7) +10078833115*a(n-8) -31788474833*a(n-9) -62614662381*a(n-10) +560437441681*a(n-11) -642115987254*a(n-12) -2499011458897*a(n-13) +6268700558495*a(n-14) +963700261876*a(n-15) -12620524925764*a(n-16) +6372190291752*a(n-17) +1053712106560*a(n-18) -1060563638688*a(n-19) +11585781964416*a(n-20) +5647581956608*a(n-21) -36276070293504*a(n-22) +23488582508544*a(n-23) +1781937340416*a(n-24) -5735198490624*a(n-25) +1426902220800*a(n-26) for n>29
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..1....0..1..2..2....0..0..0..0....0..0..1..2
..1..1..1..0....2..1..2..2....0..0..0..2....1..1..2..1....2..1..2..1
..2..2..0..1....0..2..0..0....1..2..0..0....0..0..2..0....1..2..1..2
..0..1..0..0....2..0..1..1....1..0..1..0....1..2..1..2....2..0..0..1
..2..0..1..1....2..1..2..1....2..2..1..2....1..2..1..1....0..2..2..1
CROSSREFS
Sequence in context: A068815 A093174 A280677 * A233079 A159992 A101830
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 05 2012
STATUS
approved