T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2 or 3 with sum zero.

A193702

T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2 or 3 with sum zero.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =9a(6) =1a(7) =7a(8) =23a(9) =23a(10) =1a(11) =9a(12) =43a(13) =83a(14) =57a(15) =1a(16) =11a(17) =69a(18) =181a(19) =299a(20) =141a(21) =1a(22) =13a(23) =101a(24) =317a(25) =827a(26) =1081a(27) =351a(28) =1a(29) =15

External references