login
A188234
Number of nondecreasing arrangements of n numbers in -(n+5)..(n+5) with sum zero and not more than two numbers equal
1
1, 8, 40, 234, 1317, 7435, 41748, 234413, 1316060, 7395049, 41601836, 234385104, 1322693568, 7477225191, 42343586740, 240215460615, 1365117760484, 7771029244519, 44310379612078, 253062451888388, 1447507286439975
OFFSET
1,2
COMMENTS
Column 7 of A188236
LINKS
EXAMPLE
Some solutions for n=4
.-8...-6...-8...-9...-6...-4...-8...-8...-5...-6...-7...-4...-6...-8...-4...-7
..2...-2...-5...-1...-1...-4...-2....0...-3...-5...-4...-2....0...-6...-3...-5
..3....4....5....4...-1....3....2....2....4....4....5...-1....1....5....1....6
..3....4....8....6....8....5....8....6....4....7....6....7....5....9....6....6
CROSSREFS
Sequence in context: A272396 A051199 A228679 * A068775 A068774 A073955
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 2011
STATUS
approved