Number of arrays of 6 integers in -n..n with sum zero and adjacent elements differing in absolute value.

A202966

Number of arrays of 6 integers in -n..n with sum zero and adjacent elements differing in absolute value.

Terms

    a(0) =0a(1) =200a(2) =1936a(3) =9884a(4) =33736a(5) =90604a(6) =207184a(7) =421620a(8) =785504a(9) =1366876a(10) =2251016a(11) =3543320a(12) =5371856a(13) =7888384a(14) =11270788a(15) =15726488a(16) =21492408a(17) =28838244a(18) =38069472a(19) =49527504a(20) =63592532a(21) =80687412a(22) =101276728a(23) =125870512a(24) =155027684a(25) =189355324

External references