T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous.

A199847

T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =5a(6) =1a(7) =4a(8) =8a(9) =11a(10) =1a(11) =5a(12) =13a(13) =23a(14) =26a(15) =1a(16) =6a(17) =18a(18) =42a(19) =66a(20) =63a(21) =1a(22) =7a(23) =25a(24) =68a(25) =132a(26) =192a(27) =153a(28) =1a(29) =8

External references