Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.

A189500

Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.

Terms

    a(0) =0a(1) =42a(2) =152a(3) =462a(4) =1088a(5) =2128a(6) =3850a(7) =6474a(8) =10126a(9) =15224a(10) =22180a(11) =30900a(12) =42164a(13) =56514a(14) =73816a(15) =94984a(16) =120700a(17) =150836a(18) =186756a(19) =228696a(20) =276618a(21) =332204a(22) =396444a(23) =467948a(24) =549504a(25) =642000a(26) =744978a(27) =859846a(28) =988550a(29) =1129542

External references