cp's OEIS Frontend

A188208 Number of nondecreasing arrangements of n numbers in -(n+4)..(n+4) with sum zero.

%I A188208 #7 Jul 22 2025 11:02:50
%S A188208 1,7,32,177,967,5444,30982,178870,1043534,6147894,36525052,218635791,
%T A188208 1317499741,7987022942,48681694352,298175840393,1834480258489,
%U A188208 11332354653885,70266266183888,437183447677006,2728700799802620
%N A188208 Number of nondecreasing arrangements of n numbers in -(n+4)..(n+4) with sum zero.
%C A188208 Column 6 of A188211
%H A188208 R. H. Hardin, <a href="/A188208/b188208.txt">Table of n, a(n) for n = 1..27</a>
%e A188208 Some solutions for n=3
%e A188208 ..0...-1...-5...-6...-2...-5...-7...-6...-6...-5...-3...-3...-3...-6...-3...-7
%e A188208 ..0...-1....2....1...-1....0....0....3....2....1...-1...-2....0...-1....1....3
%e A188208 ..0....2....3....5....3....5....7....3....4....4....4....5....3....7....2....4
%K A188208 nonn
%O A188208 1,2
%A A188208 _R. H. Hardin_ Mar 24 2011