Number of arrangements of 6 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.

A188252

Number of arrangements of 6 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.

Terms

    a(0) =0a(1) =300a(2) =1632a(3) =7092a(4) =16484a(5) =43440a(6) =75080a(7) =142532a(8) =232432a(9) =380244a(10) =525668a(11) =841504a(12) =1099064a(13) =1531092a(14) =2070976a(15) =2785252a(16) =3396316a(17) =4539424a(18) =5414024a(19) =6981628a(20) =8554708a(21) =10387240a(22) =11982424a(23) =15101088a(24) =17498972

External references