cp's OEIS Frontend

A188234 Number of nondecreasing arrangements of n numbers in -(n+5)..(n+5) with sum zero and not more than two numbers equal.

%I A188234 #7 Jul 22 2025 11:04:07
%S A188234 1,8,40,234,1317,7435,41748,234413,1316060,7395049,41601836,234385104,
%T A188234 1322693568,7477225191,42343586740,240215460615,1365117760484,
%U A188234 7771029244519,44310379612078,253062451888388,1447507286439975
%N A188234 Number of nondecreasing arrangements of n numbers in -(n+5)..(n+5) with sum zero and not more than two numbers equal.
%C A188234 Column 7 of A188236
%H A188234 R. H. Hardin, <a href="/A188234/b188234.txt">Table of n, a(n) for n = 1..25</a>
%e A188234 Some solutions for n=4
%e A188234 .-8...-6...-8...-9...-6...-4...-8...-8...-5...-6...-7...-4...-6...-8...-4...-7
%e A188234 ..2...-2...-5...-1...-1...-4...-2....0...-3...-5...-4...-2....0...-6...-3...-5
%e A188234 ..3....4....5....4...-1....3....2....2....4....4....5...-1....1....5....1....6
%e A188234 ..3....4....8....6....8....5....8....6....4....7....6....7....5....9....6....6
%K A188234 nonn
%O A188234 1,2
%A A188234 _R. H. Hardin_ Mar 24 2011