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

A190073

Number of arrangements of 4 nonzero numbers x(i) in -n..n 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) =40a(2) =166a(3) =483a(4) =1126a(5) =2276a(6) =4150a(7) =6946a(8) =10909a(9) =16353a(10) =23728a(11) =33290a(12) =45591a(13) =61100a(14) =80161a(15) =103121a(16) =130833a(17) =163649a(18) =202441a(19) =247746a(20) =300269a(21) =360694a(22) =430361a(23) =508989a(24) =598090a(25) =698534a(26) =811133a(27) =936287a(28) =1075989a(29) =1230312

External references