T(n,k)=Number of arrangements of n+1 nonzero numbers x(i) in -k..k with the sum of trunc(x(i)/x(i+1)) equal to zero.

A189545

T(n,k)=Number of arrangements of n+1 nonzero numbers x(i) in -k..k with the sum of trunc(x(i)/x(i+1)) equal to zero.

Terms

    a(0) =0a(1) =4a(2) =4a(3) =12a(4) =8a(5) =0a(6) =24a(7) =28a(8) =44a(9) =12a(10) =40a(11) =72a(12) =192a(13) =152a(14) =0a(15) =60a(16) =152a(17) =544a(18) =964a(19) =552a(20) =40a(21) =84a(22) =264a(23) =1340a(24) =3664a(25) =5416a(26) =2000a(27) =0a(28) =112a(29) =432

External references