Number of Sidon subsets of {1,...,n} of size 5.

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) =4a(12) =22a(13) =68a(14) =156a(15) =320a(16) =584a(17) =1008a(18) =1622a(19) =2520a(20) =3734a(21) =5428a(22) =7612a(23) =10488a(24) =14126a(25) =18744a(26) =24390a(27) =31436a(28) =39914a(29) =50212