OFFSET
1,2
COMMENTS
Column 4 of A188277
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
a(n) = [y^0] [x^n] Product_{j=-4..4} 1/(1-x*y^(j^3)). - Robert Israel, Feb 06 2019
EXAMPLE
Some solutions for n=8 k=4
.-2...-3...-4...-4...-3...-3...-4...-3...-1...-3...-4...-4...-4...-1...-4...-3
.-2...-2...-4...-4...-3...-2...-4...-2...-1...-2...-4...-3...-3...-1...-2...-3
.-1....0...-3....1...-3...-2...-3...-2...-1...-2...-3...-1...-3....0...-1...-2
..0....0...-3....1...-2....0....0...-2....0...-1...-1...-1...-1....0...-1...-1
..0....0....3....2...-1....0....0....2....0....1....1....1....1....0....1....1
..1....0....3....3...-1....2....3....2....1....2....3....1....3....0....1....2
..2....2....4....3....3....2....4....2....1....2....4....3....3....1....2....3
..2....3....4....4....4....3....4....3....1....3....4....4....4....1....4....3
MAPLE
P:= 1/mul(1-x*y^(j^3), j=-4..4):
S:= series(P, x, 101):
seq(coeff(coeff(S, x, n), y, 0), n=1..100); # Robert Israel, Feb 06 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 26 2011
STATUS
approved