Number of ways to choose 4 disjoint subsets of {1..n} with the same sum and with respectively 1, 2, 3 and 4 distinct elements of {1..n}.

A363517

Number of ways to choose 4 disjoint subsets of {1..n} with the same sum and with respectively 1, 2, 3 and 4 distinct elements of {1..n}.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =6a(16) =18a(17) =57a(18) =155a(19) =351a(20) =714a(21) =1386a(22) =2495a(23) =4291a(24) =7043a(25) =11234a(26) =17270a(27) =26087a(28) =38105a(29) =54954

External references