T(n,k)=Number of nondecreasing arrangements of n numbers in -(n+k-2)..(n+k-2) with sum zero and not more than two numbers equal.

A188236

T(n,k)=Number of nondecreasing arrangements of n numbers in -(n+k-2)..(n+k-2) with sum zero and not more than two numbers equal.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =4a(6) =1a(7) =4a(8) =7a(9) =15a(10) =1a(11) =5a(12) =12a(13) =30a(14) =58a(15) =1a(16) =6a(17) =17a(18) =52a(19) =119a(20) =245a(21) =1a(22) =7a(23) =24a(24) =81a(25) =221a(26) =527a(27) =1082a(28) =1a(29) =8

External references