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.

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.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =6a(4) =12a(5) =0a(6) =12a(7) =36a(8) =40a(9) =12a(10) =20a(11) =76a(12) =166a(13) =144a(14) =0a(15) =30a(16) =143a(17) =483a(18) =922a(19) =550a(20) =40a(21) =42a(22) =233a(23) =1126a(24) =3481a(25) =5136a(26) =1896a(27) =0a(28) =56a(29) =366

External references