A249212 T(n,k)=Number of length n+6 0..k arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

126, 1792, 250, 14336, 4586, 496, 67452, 51200, 11874, 984, 242494, 294568, 183516, 30876, 1952, 714980, 1267754, 1287632, 658448, 80354, 3872, 1826748, 4353482, 6631348, 5630090, 2363528, 208876, 7680, 4173442, 12777540, 26526142, 34695508

Offset: 1

Author

R. H. Hardin, Oct 23 2014

Keywords

• nonn
• tabl

Comments

Table starts

...126....1792......14336.......67452.......242494........714980........1826748

...250....4586......51200......294568......1267754.......4353482.......12777540

...496...11874.....183516.....1287632......6631348......26526142.......89437990

...984...30876.....658448.....5630090.....34695508.....161678612......626273302

..1952...80354....2363528....24619804....181549572.....985612414.....4386401650

..3872..208876....8486156...107662502....950035900....6008974124....30726981418

..7680..541624...30475714...470797744...4971575032...36636435714...215266489016

.15234.1400008..109474166..2058664560..26016562386..223372525098..1508222615012

.30218.3618986..393232196..9001977388.136146815610.1361915986824.10567758194606

.59940.9363890.1412652056.39365277268.712472439202.8303744023910.74046470379458

Examples

			Some solutions for n=3 k=4
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....0....1....1....1....0....0....1....0....0....0....0....0....0....0....0
..1....0....3....3....0....3....2....2....4....1....1....4....0....4....0....3
..2....0....0....4....3....3....2....2....1....2....4....1....2....3....1....4
..1....0....1....1....1....1....0....2....3....1....2....1....2....0....0....4
..1....4....3....3....3....2....4....1....2....3....2....1....3....2....3....0
..3....0....3....3....1....4....0....4....2....2....4....1....3....4....1....4
..3....2....4....4....4....0....0....1....0....4....2....2....0....0....3....0
..1....3....1....4....3....4....2....1....3....3....0....0....1....3....2....0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..174

Crossrefs

Column 1 is A249190

Column 2 is A249191

Formula

Empirical for column k:

k=1: a(n) = a(n-1) +a(n-2) +a(n-3) +a(n-4) +a(n-5) +a(n-6)