Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of trunc(x(i)/x(i+1)) equal to zero.

A189546

Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of trunc(x(i)/x(i+1)) equal to zero.

Terms

    a(0) =4a(1) =8a(2) =28a(3) =72a(4) =152a(5) =264a(6) =432a(7) =660a(8) =968a(9) =1352a(10) =1832a(11) =2400a(12) =3084a(13) =3880a(14) =4808a(15) =5876a(16) =7100a(17) =8472a(18) =10020a(19) =11736a(20) =13648a(21) =15748a(22) =18064a(23) =20576a(24) =23328a(25) =26304a(26) =29536a(27) =33012a(28) =36764a(29) =40768

External references