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A188232 Number of nondecreasing arrangements of n numbers in -(n+3)..(n+3) with sum zero and not more than two numbers equal 1
1, 6, 24, 121, 598, 3047, 15696, 81981, 432491, 2302608, 12355260, 66761159, 362992938, 1984748322, 10907074884, 60215001180, 333824553431, 1857784353244, 10375296176688, 58131888133855, 326686361277196, 1841007865239913 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A188236

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..28

EXAMPLE

Some solutions for n=4

.-4...-5...-5...-5...-7...-6...-7...-5...-4...-2...-6...-7...-3...-4...-1...-6

..0...-2....0...-3...-2....0...-6....1...-2....0...-6...-4...-3...-1...-1....1

..0....2....0....4....3....3....6....1....2....1....5....5....0....1....1....2

..4....5....5....4....6....3....7....3....4....1....7....6....6....4....1....3

CROSSREFS

Sequence in context: A293123 A060249 A052557 * A274072 A224662 A200160

Adjacent sequences:  A188229 A188230 A188231 * A188233 A188234 A188235

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 24 2011

STATUS

approved

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Last modified April 6 11:51 EDT 2020. Contains 333273 sequences. (Running on oeis4.)