T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a substring of length 1 or 2 with sum zero. Array listed by antidiagonals.

A193648

T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a substring of length 1 or 2 with sum zero. Array listed by antidiagonals.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =7a(6) =1a(7) =7a(8) =13a(9) =15a(10) =1a(11) =9a(12) =19a(13) =37a(14) =33a(15) =1a(16) =11a(17) =25a(18) =67a(19) =105a(20) =73a(21) =1a(22) =13a(23) =31a(24) =105a(25) =217a(26) =297a(27) =161a(28) =1a(29) =15

External references