Number of arrangements of n+1 nonzero numbers x(i) in -4..4 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.

A190066

Number of arrangements of n+1 nonzero numbers x(i) in -4..4 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) =12a(1) =76a(2) =483a(3) =3481a(4) =25306a(5) =191456a(6) =1436962a(7) =10802667a(8) =81709584a(9) =622881909a(10) =4769974211a(11) =36631166224a(12) =282173132213

External references