Triangle read by rows: T(n,k) is the number of 2-balanced partitions of a set of n elements in which the first and the second subsets have cardinality k, for n >= 0, k = 0..floor(n/2).

A343254

Triangle read by rows: T(n,k) is the number of 2-balanced partitions of a set of n elements in which the first and the second subsets have cardinality k, for n >= 0, k = 0..floor(n/2).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =2a(6) =15a(7) =5a(8) =3a(9) =52a(10) =15a(11) =8a(12) =203a(13) =52a(14) =25a(15) =16a(16) =877a(17) =203a(18) =89a(19) =53a(20) =4140a(21) =877a(22) =354a(23) =197a(24) =131a(25) =21147a(26) =4140a(27) =1551a(28) =810a(29) =512

External references