Number of Sidon subsets of {1,...,n} of size 6.

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) =0a(16) =0a(17) =8a(18) =24a(19) =80a(20) =206a(21) =504a(22) =1004a(23) =1910a(24) =3380a(25) =5688a(26) =9036a(27) =14106a(28) =21190a(29) =31158