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

1,1

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

Links

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

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)

Example

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

Crossrefs

Column 1 is A249190

Column 2 is A249191

Sequence in context: A027814 A109146 A249197 * A249319 A249198 A249213

Adjacent sequences: A249209 A249210 A249211 * A249213 A249214 A249215

Keyword

nonn,tabl

Author

R. H. Hardin, Oct 23 2014

Status

approved