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 A187988 T(n,k)=Number of nondecreasing arrangements of n numbers x(i) in -(n+k-2)..(n+k-2) with the sum of sign(x(i))*2^|x(i)| zero 14
 0, 0, 1, 0, 2, 3, 0, 3, 5, 9, 0, 4, 7, 15, 36, 0, 5, 9, 22, 57, 117, 0, 6, 11, 30, 82, 181, 411, 0, 7, 13, 39, 111, 260, 632, 1452, 0, 8, 15, 49, 144, 355, 912, 2199, 5040, 0, 9, 17, 60, 181, 467, 1257, 3158, 7593, 17829, 0, 10, 19, 72, 222, 597, 1673, 4357, 10920, 26706, 62870 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts .....0.....0.....0.....0.....0.....0.....0.....0....0....0...0...0..0..0.0 .....1.....2.....3.....4.....5.....6.....7.....8....9...10..11..12.13.14 .....3.....5.....7.....9....11....13....15....17...19...21..23..25.27 .....9....15....22....30....39....49....60....72...85...99.114.130 ....36....57....82...111...144...181...222...267..316..369.426 ...117...181...260...355...467...597...746...915.1105.1317 ...411...632...912..1257..1673..2166..2742..3407.4167 ..1452..2199..3158..4357..5825..7592..9689.12148 ..5040..7593.10920.15146.20404.26835.34588 .17829.26706.38385.53379.72246.95590 LINKS R. H. Hardin, Table of n, a(n) for n = 1..117 EXAMPLE Some solutions for n=5 k=3 .-3...-6...-5...-3...-3...-6...-4...-4...-1...-4...-2...-4...-4...-2...-3...-5 .-3...-3...-5...-1...-3...-5...-1...-2...-1...-4...-2...-2...-4...-1....1...-1 .-2...-3...-2....1...-3...-5....0...-2....0...-4...-1....2...-3....1....1....1 ..2....4....2....2...-3....6....0....3....0...-4....1....3....3....1....1....4 ..4....6....6....2....5....6....4....4....1....6....3....3....5....1....1....4 CROSSREFS Row 4 is A055999(n+1) Sequence in context: A227536 A047773 A279416 * A035549 A245255 A180188 Adjacent sequences:  A187985 A187986 A187987 * A187989 A187990 A187991 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 18 2011 STATUS approved

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Last modified May 23 05:03 EDT 2019. Contains 323508 sequences. (Running on oeis4.)