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A183923 Number of nondecreasing arrangements of n numbers in -5..5 with sum zero and sum of squares not greater than n*30/3 1
1, 4, 12, 37, 93, 220, 476, 979, 1888, 3493, 6187, 10619, 17646, 28558, 45007, 69453, 104985, 155861, 227488, 327057, 463466, 648333, 895855, 1224083, 1654923, 2215739, 2939098, 3865358, 5042160, 6527147, 8388454, 10707515, 13578946 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A183927

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..169

EXAMPLE

Some solutions for n=4

.-5...-5...-3...-3...-2...-3...-4....0...-4...-4...-2...-3...-2...-1...-2...-3

..1....0...-3...-3...-1....0...-1....0....0....1...-1...-2...-2...-1...-2...-2

..2....2....3....2....0....1....2....0....1....1....1....0....0...-1....2....1

..2....3....3....4....3....2....3....0....3....2....2....5....4....3....2....4

CROSSREFS

Sequence in context: A164853 A076124 A247952 * A349053 A279277 A101555

Adjacent sequences: A183920 A183921 A183922 * A183924 A183925 A183926

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2011

STATUS

approved

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Last modified December 6 18:28 EST 2022. Contains 358644 sequences. (Running on oeis4.)