OFFSET
1,6
COMMENTS
Calculation suggests that {a(2n)/8} is A002054 (shifted).
LINKS
Sean A. Irvine, Java program (github)
EXAMPLE
a(6) = 8: [0,-1,0,-1,0,-1,0], [0,-1,0,-1,0,1,0], [0,-1,0,1,0,-1,0], [0,-1,0,1,0,1,0], [0,1,0,-1,0,-1,0], [0,1,0,-1,0,1,0], [0,1,0,1,0,-1,0], [0,1,0,1,0,1,0].
MAPLE
a:= n-> max(0, (m-> 8*(d+1)*binomial(2*m+1, m-1))(iquo(n-4, 2, 'd'))):
seq(a(n), n=1..36); # Alois P. Heinz, Oct 30 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
John W. Layman, Jan 26 2000
EXTENSIONS
More terms from Sean A. Irvine, Oct 29 2021
STATUS
approved