Number of arrangements of 9 nonzero numbers x(i) in -n..n 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.

A190078

Number of arrangements of 9 nonzero numbers x(i) in -n..n 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.

Terms

    a(0) =140a(1) =27328a(2) =910716a(3) =10802667a(4) =73725405a(5) =353856100a(6) =1333341624a(7) =4232955454a(8) =11720735320a(9) =29213945353a(10) =67119317038a(11) =143366487211a(12) =287901954546a(13) =552087286271

External references