Number of arrays of 5 integers in -n..n with sum zero and adjacent elements differing in absolute value.

A202965

Number of arrays of 5 integers in -n..n with sum zero and adjacent elements differing in absolute value.

Terms

    a(0) =2a(1) =82a(2) =414a(3) =1562a(4) =4048a(5) =9010a(6) =17296a(7) =30648a(8) =50232a(9) =78388a(10) =116614a(11) =167824a(12) =233858a(13) =318234a(14) =423094a(15) =552554a(16) =709104a(17) =897434a(18) =1120360a(19) =1383176a(20) =1689016a(21) =2043772a(22) =2450910a(23) =2916896a(24) =3445538a(25) =4043906a(26) =4716110a(27) =5469818a(28) =6309488a(29) =7243362

External references