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 A190071 T(n,k)=Number of arrangements of n+1 nonzero numbers x(i) in -k..k with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero 16
 0, 2, 4, 6, 12, 0, 12, 36, 40, 12, 20, 76, 166, 144, 0, 30, 143, 483, 922, 550, 40, 42, 233, 1126, 3481, 5136, 1896, 0, 56, 366, 2276, 9904, 25306, 28656, 7584, 140, 72, 536, 4150, 23400, 88509, 191456, 162028, 27328, 0, 90, 760, 6946, 48491, 249119, 834717 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...0......2........6........12.........20..........30...........42...........56 ...4.....12.......36........76........143.........233..........366..........536 ...0.....40......166.......483.......1126........2276.........4150.........6946 ..12....144......922......3481.......9904.......23400........48491........92478 ...0....550.....5136.....25306......88509......249119.......599181......1291797 ..40...1896....28656....191456.....834717.....2783714......7737762.....18951546 ...0...7584...162028...1436962....7843113....31391655....101530262....282859251 .140..27328...910716..10802667...73725405...353856100...1333341624...4232955454 ...0.105348..5162308..81709584..697624797..4017545773..17643516841..63898862902 .504.398760.29554964.622881909.6644826507.45918810745.235162515839.972408511316 LINKS R. H. Hardin, Table of n, a(n) for n = 1..793 EXAMPLE Some solutions for n=6 k=4 .-3...-4....2....1....3...-3...-4....1....2...-1...-3....2...-1....1....2...-2 .-1...-4...-4...-3...-2...-2...-2...-2...-3...-1...-1...-1...-2...-2...-3...-4 ..3....2....1....2....4....1....4...-2...-2...-3....1....3...-3....3...-2...-2 .-1....2....1....4....2...-2...-3....2....4....1....2....3...-2....1...-3....1 .-1....4...-2....3...-1....3....3...-4...-1....2....3...-4....2...-2....2....3 ..4....3...-1....4...-3....2....3...-4...-4....2...-4...-4...-1....3....4....2 ..3...-2...-1....3...-3...-3....4....4...-3....4....3...-4....1...-3...-3...-1 CROSSREFS Column 1 is A028329(n/2) for even n Row 1 is A002378(n-1) Sequence in context: A084979 A049914 A056763 * A189498 A129567 A064469 Adjacent sequences: A190068 A190069 A190070 * A190072 A190073 A190074 KEYWORD nonn,tabl AUTHOR R. H. Hardin May 04 2011 STATUS approved

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Last modified June 10 06:58 EDT 2023. Contains 363195 sequences. (Running on oeis4.)