Number of arrays of 3 integers in -n..n with sum zero and adjacent elements differing in absolute value.

A202963

Number of arrays of 3 integers in -n..n with sum zero and adjacent elements differing in absolute value.

Terms

    a(0) =2a(1) =6a(2) =20a(3) =36a(4) =62a(5) =90a(6) =128a(7) =168a(8) =218a(9) =270a(10) =332a(11) =396a(12) =470a(13) =546a(14) =632a(15) =720a(16) =818a(17) =918a(18) =1028a(19) =1140a(20) =1262a(21) =1386a(22) =1520a(23) =1656a(24) =1802a(25) =1950a(26) =2108a(27) =2268a(28) =2438a(29) =2610

External references