Square array read by diagonals: T(n,k) = number of arrays of n integers in -k..k with sum equal to 0.
A201552
Square array read by diagonals: T(n,k) = number of arrays of n integers in -k..k with sum equal to 0.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =7a(6) =1a(7) =7a(8) =19a(9) =19a(10) =1a(11) =9a(12) =37a(13) =85a(14) =51a(15) =1a(16) =11a(17) =61a(18) =231a(19) =381a(20) =141a(21) =1a(22) =13a(23) =91a(24) =489a(25) =1451a(26) =1751a(27) =393a(28) =1a(29) =15
External references
- oeis: A201552