T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero.

A199832

T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero.

Terms

    a(0) =2a(1) =10a(2) =4a(3) =24a(4) =40a(5) =4a(6) =44a(7) =140a(8) =114a(9) =10a(10) =70a(11) =336a(12) =646a(13) =426a(14) =22a(15) =102a(16) =660a(17) =2146a(18) =3556a(19) =1650a(20) =34a(21) =140a(22) =1144a(23) =5390a(24) =15708a(25) =20240a(26) =6126a(27) =66a(28) =184a(29) =1820

External references