login
A202076
T(n,k)=Number of arrays of n+2 integers in -k..k with sum zero and the sum of every adjacent pair being odd
12
2, 4, 4, 10, 20, 2, 14, 56, 26, 0, 24, 120, 78, 0, 6, 30, 220, 264, 0, 96, 12, 44, 364, 504, 0, 1014, 524, 6, 52, 560, 1128, 0, 3752, 5832, 726, 0, 70, 816, 1786, 0, 15010, 34632, 8412, 0, 20, 80, 1140, 3262, 0, 35604, 142692, 80812, 0, 2760, 40, 102, 1540, 4660, 0, 95342
OFFSET
1,1
COMMENTS
Table starts
..2.....4.....10.......14........24........30.........44..........52
..4....20.....56......120.......220.......364........560.........816
..2....26.....78......264.......504......1128.......1786........3262
..0.....0......0........0.........0.........0..........0...........0
..6....96...1014.....3752.....15010.....35604......95342......181834
.12...524...5832....34632....142692....462436....1264272.....3044496
..6...726...8412....80812....340660...1516410....4213042....12861252
..0.....0......0........0.........0.........0..........0...........0
.20..2760.118560..1201220..10924220..50331332..241384794...755963886
.40.15560.691352.11395632.105606040.670671976.3259289000.12973320840
LINKS
EXAMPLE
Some solutions for n=3 k=3
..0....0....0....2....2....0....2....2....0....0....0...-2....2....0...-2...-2
..1...-1....3....1...-1....1....1...-1....1...-1...-1....3...-3...-3....3....3
.-2...-2...-2...-2....0....2....0....0....0....2....0...-2....2....2...-2....0
..1....1...-3...-3....1...-3...-1...-3...-3...-1....3....3...-3...-1...-1...-3
..0....2....2....2...-2....0...-2....2....2....0...-2...-2....2....2....2....2
CROSSREFS
Row 1 is A152749
Row 2 is A002492
Sequence in context: A118336 A193852 A327544 * A199825 A121049 A056415
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 10 2011
STATUS
approved