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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A188325 Number of nondecreasing arrangements of n nonzero numbers in -(n-1)..(n-1) with sum zero.

Original entry on oeis.org

0, 1, 2, 10, 40, 197, 980, 5142, 27632, 152191, 853564, 4863492, 28075992, 163920550, 966421928, 5746596806, 34428962746, 207654949801, 1259963104618, 7686160299232, 47116518171284, 290105437233107, 1793451033655758
Offset: 1

Views

Author

R. H. Hardin Mar 28 2011

Keywords

Comments

Column 1 of A188333

Examples

			Some solutions for n=6
.-5...-4...-5...-4...-4...-4...-5...-4...-4...-3...-5...-5...-5...-2...-5...-2
.-3...-2...-4...-2...-4...-2...-3...-2...-3...-2...-1...-4...-3...-2...-3...-2
.-1....1....1...-1...-1....1....2...-1....1...-1...-1...-4...-3...-2...-1...-2
..1....1....2....2....1....1....2...-1....1...-1....1....3....1...-2....1...-1
..3....2....2....2....3....1....2....3....1....3....2....5....5....4....4....2
..5....2....4....3....5....3....2....5....4....4....4....5....5....4....4....5

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