Number of subsets of {1..n} (including empty set) such that the pairwise sums of distinct elements are all distinct.
A196723
Number of subsets of {1..n} (including empty set) such that the pairwise sums of distinct elements are all distinct.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =15a(5) =28a(6) =50a(7) =86a(8) =143a(9) =236a(10) =376a(11) =594a(12) =913a(13) =1380a(14) =2048a(15) =3016a(16) =4367a(17) =6302a(18) =8974a(19) =12670a(20) =17685a(21) =24580a(22) =33738a(23) =46072a(24) =62367a(25) =83990a(26) =112342a(27) =149734a(28) =198153a(29) =261562
External references
- oeis: A196723